Jeramie, like Richard Dreyfuss' ex-wife Jeramie Rain. Another one might be Jacquemine or Jennemie, a rare Dutch combination of what is essentially Joanna and Marie.
Kind of difficult, because there aren't as much as possibilities, IMO. Perhaps Jelmira, Jemeela, Jemine or Jemyka or Germaine, Germana, Germina or Germa.
Gemma, which is awful, and no doubt Jemma, which is worse?Personally, I'd give her a wash-and-wear, no-mess, no-fuss name or names and use Jem/Gem as a random nn.
Hmm .... this is honestly hard. The three you said you weren’t interested in are the only ones that come to mind. Maybe Jamie or Jamila would work? Can’t think of anything else, really sorry.