I'm fond of
Annabelle, and I'm not sure why, given that I'm a little sick of
Isabel, Clarabelle, and all the other -bel/-belle names.
I definitely think it's still usable. I do think the popularity will decline, however, given the -belle names were a bit overused in the last ~10 years. That isn't necessarily a bad thing, though!
Annabelle was never TOO popular to make it feel dated, in my opinion.
“Fairy tales are more than true; not because they tell us that dragons exist, but because they tell us that dragons can be beaten.”
― Neil Gaiman