Lavender's event had no new girls whatsoever, then the next two events only had two girls added. Edelweiss had Cattleya/Camellia (and Lilac), Mountain Lily had Dendrobium/Cymbidium. After that was the usual one rainbow + two golds.

And if you remember the revivals, the gacha girls were involved with the PREVIOUS event, not the current event like it is now.

Lavender had Cattleya/Camellia/Oncidium as guests (and Maidoari's debut), Edelweiss had Violet/Cymbidium/Dendrobium, Mountain Lily had Anemone/Rose/Chocolate Cosmos, and Moonvine has Fritillaria/Gerbera/Water Lily. Not sure who Tachibana and Star Lily will involve.