Here's my ideas for what their tribes MIGHT be:
Forest Gaurdian and *REDACTED* will both be tribless/allwings/of amigious tribe, that kind of stuff
Alabaster- IceWing
Bob- MudWing
Buttercup- Leaf/Mud
Champ- SkyWing
Charlotte- NightWing
Coco- Night/Ice
Ember- SkyWing
Fliss and Lainey- RainWings
Garlic- Leaf/Sand?
Glimmer- Unsure, give me ideas! Might be a SilkWing
Jag- Again, not sure
Krampy- NightWing, possibly some sort of NightWing hybrid
Phantom- Sea/Night or Sea/Ice
Rosemary- Not sure, probably MudWing
Spark- Sky/Sand
Talon- Some sort of IceWing hybrid
Umbra- Amigious allwing blob
Zephyr- RainWing? Not sure.