[name_f]Ramona[/name_f] nn [name_u]Romy[/name_u] - [name_f]Lovely[/name_f]!
[name_f]Etta[/name_f] - It’s on my list, I love it! 
[name_f]Magnolia[/name_f] nn. [name_f]Maggie[/name_f] - Gorgeous.
[name_f]Dorothy[/name_f] nn [name_u]Dory[/name_u] or [name_f]Dot[/name_f] - I love this, especially nn [name_f]Dot[/name_f]!
[name_f]Norah[/name_f] - Sweet.
[name_f]Eleanor[/name_f] nn [name_f]Leni[/name_f] - A Nameberry favourite. [name_f]Lovely[/name_f].
[name_f]Sylvie[/name_f] - One of my favourites.
[name_f]Regina[/name_f] nn [name_m]Regi[/name_m] - I had a music teacher called [name_f]Regina[/name_f], so has good associations for me.
[name_f]Bridget[/name_f] - [name_u]Love[/name_u] it!
[name_f]Hazel[/name_f] - Tied to TFiOS, at the moment, but I still really like it.
[name_u]Billie[/name_u] - [name_u]Love[/name_u] love love!
[name_f]Florence[/name_f] nn [name_u]Ren[/name_u] - Gorgeous!
[name_f]Colette[/name_f] nn [name_f]Coco[/name_f] - Wah, perfect!
[name_u]Remi[/name_u]/[name_u]Remy[/name_u] - Very pretty.
[name_f]Eartha[/name_f] - Not for me personally, but if I met a little [name_f]Eartha[/name_f], I’d warm to it straight away.
[name_f]Salma[/name_f] nn [name_f]Sally[/name_f], [name_u]Sal[/name_u] - Cute!
I think the majority of the names on your list are old lady chic. While I wouldn’t call any freak or geek, I can’t picture a baby being called [name_f]Dorothy[/name_f], [name_f]Regina[/name_f], [name_f]Colette[/name_f], [name_f]Eartha[/name_f] or [name_f]Salma[/name_f].
[name_f]Dorothy[/name_f]: Still sounds stuffy to my ears, but I’m sure it’ll be more popular withing a decade. I do like the slightly frillier [name_f]Dorothea[/name_f] however.
[name_f]Regina[/name_f]: I don’t know any [name_f]Regina[/name_f]'s (except for that character of Mean Girls), but for some reason this name always brings to mind a lady in her 40’s-50’s.
[name_f]Colette[/name_f]: Again, same with [name_f]Regina[/name_f].
[name_f]Eartha[/name_f]: I don’t really like the sound of this name, and I think it could have teasing potential.
[name_f]Salma[/name_f]: Another name that still sounds just a bit too stuffy for my ears.
Usable-
[name_f]Etta[/name_f]
[name_f]Norah[/name_f]
[name_f]Eleanor[/name_f] nn [name_f]Leni[/name_f]
[name_f]Sylvie[/name_f]
[name_f]Regina[/name_f] nn [name_m]Regi[/name_m]
[name_f]Bridget[/name_f] (a favorite, I don’t think it’s dated at all. There was a little [name_f]Bridget[/name_f] ( 1 yr old ) at a daycare I worked at, they called her [name_f]Birdie[/name_f])
[name_f]Hazel[/name_f]
[name_f]Florence[/name_f] nn [name_u]Ren[/name_u] (this was my grandma’s name so it has a special place in my heart)
[name_f]Colette[/name_f] nn [name_f]Coco[/name_f]
Usable but maybe only because I’m addicted to Nameberry (lol)-
[name_u]Remi[/name_u]
[name_f]Magnolia[/name_f] nn. [name_f]Maggie[/name_f] ([name_f]Magnolia[/name_f] is so pretty)
[name_f]Dorothy[/name_f] nn [name_u]Dory[/name_u] or [name_f]Dot[/name_f] (love [name_f]Dot[/name_f]!)
[name_f]Ramona[/name_f]
[name_f]Salma[/name_f] nn [name_f]Sally[/name_f], [name_u]Sal[/name_u] (prefer [name_f]Selma[/name_f] thought)
These choices are rather modern compared to my list! 
[name_f]Ramona[/name_f] nn. romy - like this, but not a fan of [name_u]Romy[/name_u].
[name_f]Etta[/name_f] - cute!
[name_f]Magnolia[/name_f] nn. [name_f]Maggie[/name_f] - this doesn’t feel old to me at all, but it’s pretty.
[name_f]Dorothy[/name_f] nn [name_u]Dory[/name_u] or [name_f]Dot[/name_f] - I don’t really like [name_f]Dorothy[/name_f], but it’s usable.
[name_f]Norah[/name_f] - definitely usable, but the [name_f]Nora[/name_f] spelling might be easier to work with.
[name_f]Eleanor[/name_f] nn [name_f]Leni[/name_f] - [name_u]Love[/name_u] [name_f]Eleanor[/name_f], but not a fan of [name_f]Leni[/name_f].
[name_f]Sylvie[/name_f] - really cute!
[name_f]Regina[/name_f] nn [name_m]Regi[/name_m] - I cant get behind this, because in [name_f]Canada[/name_f], it rhymes with vagina. [name_f]Bridget[/name_f] - lovely! [name_f]Hazel[/name_f] - another Im personally not a fan of, but its definitely usable. [name_u]Billie[/name_u] - I never used to like this, but its been growing on me.
[name_f]Florence[/name_f] nn [name_u]Ren[/name_u] - [name_f]Florence[/name_f] is one of my all time favourites, but I don`t like [name_u]Ren[/name_u] for it 
[name_f]Colette[/name_f] nn [name_f]Coco[/name_f] - not my style, but it’s pretty
[name_u]Remi[/name_u]/[name_u]Remy[/name_u] - definitely not old fashioned, and not a fan at all.
[name_f]Eartha[/name_f] - really dislike this for no proper reason at all :S
[name_f]Salma[/name_f] nn [name_f]Sally[/name_f], [name_u]Sal[/name_u] - this sounds really unappealing to me for some reason. Not a fan, but I do love Sally.
They’re all usable though.
Usable/old-lady?
[name_f]Ramona[/name_f] nn. [name_u]Romy[/name_u]- not old lady at all! totally usable
[name_f]Etta[/name_f]- old lady chic, usable
[name_f]Magnolia[/name_f] nn. [name_f]Maggie[/name_f]- not old lady at all
[name_f]Dorothy[/name_f] nn [name_u]Dory[/name_u] or [name_f]Dot[/name_f]- fusty, [name_u]Dory[/name_u] and [name_f]Dot[/name_f] not really usable
[name_f]Norah[/name_f]- old lady chic
[name_f]Eleanor[/name_f] nn [name_f]Leni[/name_f]- totally usable
[name_f]Sylvie[/name_f]- usable
[name_f]Regina[/name_f] nn [name_m]Regi[/name_m]- fusty
[name_f]Bridget[/name_f]- not old lady
[name_f]Hazel[/name_f]- old lady chic (or even hipster chic if such a thing exists)
[name_u]Billie[/name_u]- rather dated
[name_f]Florence[/name_f] nn [name_u]Ren[/name_u]- old lady chic, usable
[name_f]Colette[/name_f] nn [name_f]Coco[/name_f]- usable
[name_u]Remi[/name_u]/[name_u]Remy[/name_u]- rather masculine- better for a boy
[name_f]Eartha[/name_f]- too clunky
[name_f]Salma[/name_f] nn [name_f]Sally[/name_f], [name_u]Sal[/name_u]- [name_f]Sally[/name_f] is usable, [name_f]Salma[/name_f] not really
[name_f]Ramona[/name_f] nn. romy - Not very usable It’s very [name_f]Beverly[/name_f] [name_m]Cleary[/name_m].
[name_f]Etta[/name_f] - cute
[name_f]Magnolia[/name_f] nn. [name_f]Maggie[/name_f] - [name_f]Maggie[/name_f] seems dated, but [name_f]Magnolia[/name_f] is cute, nms, but cute
[name_f]Dorothy[/name_f] nn [name_u]Dory[/name_u] or [name_f]Dot[/name_f] - with the nn [name_f]Dot[/name_f], it think it is cute and fresh
[name_f]Norah[/name_f] - dated, not nursing home dated, like middle aged dated
[name_f]Eleanor[/name_f] nn [name_f]Leni[/name_f] - Definitely usable, I personally don’t like any of her nns
[name_f]Sylvie[/name_f] - usable
[name_f]Regina[/name_f] nn [name_m]Regi[/name_m] - [name_u]Love[/name_u]! (prefer the full name to [name_m]Regi[/name_m] though)
[name_f]Bridget[/name_f] - cute
[name_f]Hazel[/name_f] - usable
[name_u]Billie[/name_u] - not super usable
[name_f]Florence[/name_f] nn [name_u]Ren[/name_u] - definitely cute, not the biggest fan of [name_u]Ren[/name_u], but it’s better than [name_f]Flo[/name_f]
[name_f]Colette[/name_f] nn [name_f]Coco[/name_f] - [name_f]Colette[/name_f] is adorable, [name_f]Coco[/name_f] kind of ruins it
[name_u]Remi[/name_u]/[name_u]Remy[/name_u] - no
[name_f]Eartha[/name_f] - no
[name_f]Salma[/name_f] nn [name_f]Sally[/name_f], [name_u]Sal[/name_u] - no
[name_f]Ramona[/name_f] nn. romy - [name_f]Ramona[/name_f] is not my fave but [name_u]Romy[/name_u] is cute
[name_f]Etta[/name_f] - [name_u]Love[/name_u] it
[name_f]Magnolia[/name_f] nn. [name_f]Maggie[/name_f] -[name_f]ADORE[/name_f], I wish I hadn’t already named my dog [name_f]Maggie[/name_f]
[name_f]Dorothy[/name_f] nn [name_u]Dory[/name_u] or [name_f]Dot[/name_f] - [name_u]LOVE[/name_u], Prefer [name_f]Dottie[/name_f] ([name_u]Dory[/name_u] is too Finding [name_m]Nemo[/name_m] for me)
[name_f]Norah[/name_f] - Cute
[name_f]Eleanor[/name_f] nn [name_f]Leni[/name_f] - [name_f]ADORE[/name_f] [name_f]Elenor[/name_f], like [name_f]Leni[/name_f] also could be [name_f]Nora[/name_f]
[name_f]Sylvie[/name_f], Does tend to be older sounding but I still like it
[name_f]Regina[/name_f] nn [name_m]Regi[/name_m] - Really not my fave at all
[name_f]Bridget[/name_f] - NO
[name_f]Hazel[/name_f] - Super cute, I worry about NN being Hazy
[name_u]Billie[/name_u] - Too NN to be a first name, maybe [name_f]Willamina[/name_f] NN [name_u]Billie[/name_u]
[name_f]Florence[/name_f] nn [name_u]Ren[/name_u] - [name_f]Florence[/name_f] is fine, not fond of [name_m]Renn[/name_m]
[name_f]Colette[/name_f] nn [name_f]Coco[/name_f] - [name_u]Love[/name_u] [name_f]Coco[/name_f] as a NN for [name_f]Colette[/name_f]
[name_u]Remi[/name_u]/[name_u]Remy[/name_u] - No
[name_f]Eartha[/name_f] - No No NO
[name_f]Salma[/name_f] nn [name_f]Sally[/name_f], [name_u]Sal[/name_u] - No