Cherry and Mangrove Villages! (Datapack Download) - Minecraft 1.20 

We could probably design something for our friends the rabbits. :)

I'm actually not sure how realms handles datapacks (I've never used realms before) but I might suggest re-starting your realm, and make sure the datapack is installed *before* you start it back up. Worldgen changes can't be applied using the normal /reload command. Also, new villages won't be spawned in already-loaded chunks, you'll have to load new ones.