Minecraft wiki entry for Best_biomes_for_homes, associated text: Trees are rather abundant.
Horses can spawn, except in shattered variants.
Villages can generate here.
Villages here generate melons along with wheat in their farms
Also, village butchers can have chests that have loot.
This is the only biome where acacia trees spawn naturally.
Llamas can spawn.
Windswept savanna:
There is also quite a bit of exposed coal ore and stone. Also in Bedrock Edition, rain can occur in shattered biomes.