I knew and know many many Jennifers. Jenns,
Jens, Jennas, Not so many Jennys or Jennies though!
I've heard that Gen Z thinks of this as an "old lady name" so maybe it'll be back in 20 years or so? When their kids are having kids??
I think
Jennifer is actually a pretty neat name. If you say it so many times that it loses its meaning, it has a really interesting sound! I love it as a middle name now, it makes a combo so warm and real.
Jenna is probably my least favourite variant, it sounds mean to me. I always thought
Jenny was cute, but people seem to stop using it after a certain age. My great-great grandma was a
Jeanne called
Jenny, so maybe I have a nostalgic family bias for the name.