I work at a nursing home and see some of these names.
Like:(some that weren’t on the list):
[name]Marie[/name]
[name]Ruth[/name]
[name]Fern[/name]
[name]Gene/name
[name]Jean[/name]
[name]Minerva[/name]
[name]Bertha[/name]
[name]Charlotte[/name]
[name]Virginia[/name]
[name]Otto[/name]
[name]Jeremiah[/name]
[name]Reid[/name]
[name]Fred[/name]
[name]Thelma[/name]
[name]Gertrude[/name]
[name]Grace[/name]
[name]Barbara[/name]
[name]Walter[/name]
And so on…
[name]Olive[/name]
[name]Marie[/name] is a fave of mine.
I like [name]Fern[/name] and [name]Minerva[/name]. [name]Gene[/name] reminds me of the [name]Golden[/name] Age actress [name]Gene[/name] [name]Tierney[/name].
I think some of these are just too popular to be considered “lost,” they are more generally grandparents names. [name]Ruth[/name], for example - [name]Ruth[/name] was huge afaik. And [name]Charlotte[/name] is back again. 
I used to work in LTC as well. Some of the gems I came across:
[name]Dorothy[/name]
[name]Josephine[/name]
[name]Mildred[/name] nn [name]Milly[/name]
[name]Eileen[/name]
[name]Rosemary[/name]
Some of the more unique:
[name]Delta[/name]
[name]Alpha[/name]
[name]Bertie[/name]
Loved them all!
[name]Lillian[/name]
[name]Isabel[/name]/[name]Isabelle[/name]
[name]Mary[/name](still in use)
[name]Agnes[/name]
[name]Faye[/name]
Some royals (because I, fortunately, don’t know anyone personally who’s died in 2012):
[name]Albert[/name]
[name]Carl[/name] [name]Johan[/name]
[name]Emanuel[/name]
[name]Alexander[/name]
Ragnhild
[name]Sophie[/name]
[name]Maria[/name]-[name]Christina[/name]
[name]Emmanuella[/name]
I volunteer at a LTC facility. Some of my clients are below, but not all are LOST…
[name]Erma[/name]
[name]Mary[/name]
[name]Loretta[/name]
[name]Eunice[/name]
[name]Olivia[/name]
[name]Louella[/name]
[name]Clara[/name]
[name]Lena[/name]
[name]Flossie[/name]
[name]Thelma[/name]
[name]Vera[/name]
[name]Dolores[/name]
[name]Joetta[/name]
[name]Lillian[/name]
[name]Cora[/name]
[name]Norma[/name]
[name]Elwood[/name]
[name]Thadeus[/name]
[name]Edgar[/name]
[name]George[/name]
[name]Dorsey[/name]
[name]Loren[/name]
[name]Harry[/name]
[name]Bernard[/name]
[name]Frank[/name]
[name]Leo[/name]
[name]Carl[/name]
[name]Donald[/name]
[name]Neal[/name]
[name]Jonah[/name]
My grandma was born in 1915, but [name]Sarah[/name] [name]Elizabeth[/name] stood the test of time well enough that a friend of mine in elementary school had the same fn/mn combo. I wish I could recall the names of all her siblings, but she was the 2nd of 11. Maybe I’ll ask her tomorrow. Meanwhile, I’m using my grandfather’s name, [name]Wiley[/name], for my baby that’s coming any day now. It has a lot more of that “lost gem” quality I think.
I know some of these names as younger people also like well 75 down to baby but they are cool.