Leni is probably one of the most cutesy, sickening, immature, trendy names to ever grace the popularity charts of Germany. No offense, but I'm incredibly sick of hearing it. It's so overused. Anyway, here are some combos I've seen. Not necessarily saying they're great:
Leni SophieLeni CharlotteLeni MarieLeni EmilyLeni EvelinaLeni JolieLeni PaulaLeni AnoukLeni LouisaLeni RosemarieLeni MartinaLeni GerdLeni EdithLeni LauraLeni ElisabethLeni TheaLeni AmaliaLeni MireilleLeni FabienneLeni Johanna