Oh the Biomes you´ll go has a bunch of trees that arent supported yet.
https://www.curseforge.com/minecraft/mc-mods/oh-the-biomes-youll-go

and please add forge:cherry as fruit for both cherrytrees (a.g. croptopia has cherrys and has a conversion from croptopia:cherry to forge:cherry)

good idea

I wrote a whole lot of .json files for the byg saplings. Some drops and soils may need amending though.

I also can't figure out how to make a pull request to upload the files - any help appreciated. If I can email or google drive them to someone more knowledgeable than myself that would be amazing.

i have made my own file here in here https://github.com/thraaawn/BonsaiTrees/issues/311 if you want to builds it or use it as resource pact
and if you dont want to do that you can have the finish jar file
modid-OreTree-1.18.2-0.2.5.10.jar.zip
just un zip it to get the jar file
also this is my oretree mod jar that i moded [i am not the author] myslef and add many tree to it.