I like
Clare much more than
Claire, because the -i- seems to require the French pronunciation but it never happens.
I also like
Sally very much: I find
Sarah extremely dull, but
Sally has verve and sparkle.
Jenny is good as a nn for
Jennifer, but not as a full name. My grandmother had a friend who was known as
Jenny, but her full name was
Jane. I don't think that would happen in today's world.
I really don't like the others, plus
Laoghaire is masculine.
Glenna is awful, it looks and sounds sloppy, as if
Glenda had mounted its -d-.
Brenna is the same, should be
Brenda but isn't.