I think it's both sleek and frumpy sounding in a way that's kind of unique. I do like saying it (so like it for other people), but I'm not sure I'd want to be called it.
Stylewise, I'd group it with
Sylvia,
Cecile,
Tabitha,
Lenore,
Beatrice.
Yeah, I can see it being popular again.
I don't know how most people would spell it, but
Sibyl is what looks most natural/intuitive/pleasant to me.
This message was edited 3/11/2021, 9:17 AM