Deborah - sounds dated to me but I don't mind it
Donna - maybe dated, but it feels ageless to me, I can definitely picture it on a girl or teen and I like it.
Eileen - sounds dated, not a big fan
Jessica - maybe a bit? but I like it, and
Jess feels modern to me
Kelly - I have an older relative with this name but I haven't seen it around enough for it to feel truly dated to me. I like it, I think it's a cute name for a girl.
Pamela - dated and honestly my least favorite girl's name ever
Paula - a bit dated maybe, but not too much, still very nice
Sheridan - don't hear this very often, not a fan but it's not too bad
Stephanie - a bit dated and nms
Susan - more classic than dated to me, it's a nice name but a bit boring to me as I know so many Susans
Douglas - more vintage than dated. It's actually kind of nice but I don't like the nn
Doug at all.
Frank - prefer
Franklin, just
Frank is all old man to me
Glenn - again more vintage than dated, and I like it!
Graham - again feels vintage, and I can see it coming back in style. It's a nice name, very classic.
Martin - not sure if this is dated, but I really like it
Russell - a bit dated, nms either way
Hmm, my favorite "dated" names that come to mind are
Melissa,
Marilyn, and
Clarence.