So I don't believe we can have a team with the current character lineup unless the one below works, so some name changing might be necessary. That said, I'll list some off that I think will be optimal.

SAGE
GLDN
SLVR
SLFR (Sulfur, though as far as team names go, not sure if I like it.)
GLFS (Gulfs, the only one I could think of that might work with the current names.)
SNLT (Sunlight)