recently i’ve found myself falling out of love with the boy names on my list and i’m hoping this post will help me become inspired again!
not sure what how to describe this aesthetic, but the imagery i typically strive for when crafting my list of masculine names is: 
but without further ado, here’s my current list:
otto
robin
milo
edmund “ed”
rufus
frankie
sylvester “sy”
louie “lou”
sonny
henry
any additions, vibes, opinions, etc are greatly appreciated
[name_f]My[/name_f] favorite from your list is [name_u]Henry[/name_u]. Such a classic.
Since you mentioned additions, here are some ideas:
[name_m]Athen[/name_m]
[name_u]Cecil[/name_u]
[name_m]Cedric[/name_m]
[name_u]Charlie[/name_u]
[name_m]Eduardo[/name_m]
[name_m]Evander[/name_m]
[name_u]Finn[/name_u]
[name_u]Franklin[/name_u]
[name_m]Fred[/name_m]
[name_m]Fredrick[/name_m]
[name_m]Jaycob[/name_m]
[name_m]Jerold[/name_m]
[name_u]Julian[/name_u]
[name_u]Mack[/name_u]
[name_m]Marcello[/name_m]
[name_u]Miles[/name_u]
[name_m]Naythan[/name_m]
[name_u]Neo[/name_u]
[name_u]Nick[/name_u]
[name_u]Nico[/name_u]
[name_m]Oliver[/name_m]
[name_m]Otis[/name_m]
[name_m]Richmond[/name_m]
[name_m]Rob[/name_m]
[name_u]Roscoe[/name_u]
[name_u]Rowan[/name_u]
[name_u]Sal[/name_u]
Your list is great!!
[name_m]Otto[/name_m], [name_u]Robin[/name_u], [name_m]Rufus[/name_m], [name_u]Frankie[/name_u], [name_u]Sonny[/name_u] and [name_u]Henry[/name_u] are all particularly lovely - I’d say they give a sort of vintage, earthy vibe, like offbeat classics - sweet and slightly nerdy, but in a totally cool way 
A few more inspired by these:
[name_m]Reuben[/name_m]
[name_u]Freddie[/name_u]
Curtis/Kurtis ‘Kit’
[name_m]Raphael[/name_m] ‘Raffy’
[name_m]Eben[/name_m]
[name_m]Otis[/name_m]
[name_m]Klaus[/name_m]
[name_m]Casper[/name_m]
[name_u]Everett[/name_u]
[name_u]Clyde[/name_u]
[name_m]Felix[/name_m]
Your list is great!
I think [name_u]Robin[/name_u], [name_u]Milo[/name_u] and [name_u]Frankie[/name_u] really fit the imagery! [name_m]Otto[/name_m], [name_m]Edmund[/name_m] “Ed”, [name_m]Rufus[/name_m], [name_u]Sylvester[/name_u] “Sy”, [name_u]Louie[/name_u] “Lou” and [name_u]Henry[/name_u] are nice as well although their imagery seems a bit different, more classic and regal (
). [name_u]Sonny[/name_u] fits the relaxed vibe of [name_u]Robin[/name_u], [name_u]Milo[/name_u] and [name_u]Frankie[/name_u] but feels more urban ( 
)
[name_f]My[/name_f] thoughts on your list…
[name_m]Otto[/name_m] ~ sweet, distinguished, gentlemanly with a lovely European flair. I think [name_m]Otto[/name_m] is lovely but maybe [name_m]Otis[/name_m] would be a cooler jazzier feel.
[name_u]Robin[/name_u] ~ I absolutely love [name_u]Robin[/name_u] he’s such a sweet, wintry choice with an upbeat fun sound. I love how outdoorsy [name_u]Robin[/name_u] is he’s adorable. Other bird choices could be [name_u]Lark[/name_u], [name_u]Peregrine[/name_u] and [name_u]Sparrow[/name_u]. [name_u]Or[/name_u] maybe [name_u]Rowan[/name_u].
[name_u]Milo[/name_u] ~ a sweet cuddly name that feels friendly and wholesome. [name_u]Milo[/name_u] is adorable and I like the soft ‘o’ finish. Other names with a similar style could be [name_u]Theo[/name_u], [name_u]Miles[/name_u], [name_m]Elio[/name_m] and [name_u]Leo[/name_u].
[name_m]Edmund[/name_m] ~ an unexpected vintage name that feels distinguished with dark academia imagery attached. Other ‘ed’ ideas could be [name_m]Edgar[/name_m], [name_u]Edison[/name_u], [name_m]Edwin[/name_m] or even [name_u]Edward[/name_u].
[name_m]Rufus[/name_m] ~ for me I’m just not keen I find [name_m]Rufus[/name_m] sound unappealing I prefer [name_m]Rupert[/name_m] which is just adorable or even [name_m]Reuben[/name_m].
[name_u]Frankie[/name_u] ~ a fun nickname option that feels casual and laid back. I completely appreciate the appeal of [name_u]Frankie[/name_u]. Other names with this vibe could be [name_u]Billy[/name_u], [name_m]Archie[/name_m], [name_u]Teddy[/name_u], [name_u]Tommy[/name_u] and [name_u]Jamie[/name_u].
[name_u]Sylvester[/name_u] ~ for me this name is a little too bold and just doesn’t appeal to me the way [name_m]Sylvan[/name_m] for example does.
[name_u]Louie[/name_u] ~ I personally have never been a fan of [name_u]Louie[/name_u] the general sound of the name just doesn’t appeal I prefer [name_m]Lewis[/name_m].
[name_u]Sonny[/name_u] ~ absolutely gorgeous a wonderful name that feels spunky and upbeat. I think [name_u]Sonny[/name_u] is wonderful. Such a fun choice. Other names that feel fun like [name_u]Sonny[/name_u] are [name_u]Riley[/name_u], [name_u]Albie[/name_u], [name_u]Marley[/name_u] and [name_u]Scout[/name_u].
[name_u]Henry[/name_u] ~ I adore [name_u]Henry[/name_u]! [name_u]Henry[/name_u] is such a cosy classic he’s so handsome and has such sweet autumn imagery attached. I think [name_u]Henry[/name_u] is gorgeous. Other names with a similar feel to [name_u]Henry[/name_u] could be [name_u]Arthur[/name_u], [name_u]Jack[/name_u] and [name_m]Theodore[/name_m].
[name_f]Hope[/name_f] this helps