RoVeR23c is a chill SMP made for playing survival with your friends, and it supports both Java and Bedrock. It comes with some nice quality of life stuff like craftable spawn eggs, craftable name tags, falling trees, and other handy features that make the world feel a bit smoother to play in.
It also has support for Simple Voice Chat, voice messages, voice chat interaction, Jade and REI, Custom Player Models, Emotecraft, and Vivecraft. No Chat Reports is enabled too, and if you are on QuestCraft, use the latest 1.20.1 version. There can be some visual issues on Bedrock for certain features, so just a heads up there.
The server also mentions FGM server-side support. If you are looking for a crossplay survival world with extra mod and voice chat support, this one is built for that kind of relaxed SMP play.