I think
Elle is a very nice nn for
Elizabeth (probably the one I like best), but I don't really like it spelled Ele. I just met someone named
Elizabeth nn Biz and I thought it was very cute. I like Biz better than Zizi and
Libby. I like
Brett, too... I think anything could really be a nn, so if you like it, go for it. Also,
Lily can be a nn for
Elizabeth, and I know you liked that for a possible mn, so maybe you could use that for a nn instead.
I think
Elizabeth Claire flows best, but it is pretty boring. I think
Elizabeth Ireland is cool, but it is kinda hard to say.
Elizabeth Lily/Lilian are OK, but they sound repetitive to me because
Lily can be a nn for
ELizabeth.