I heard of new"Block bench" plugins that support java entity animation but we can't import it in to Mcreator it will causes a bug.I hope this is possible because it is a block bench.
the animation will be export as a json and java entity as a java model as i know these animation can be triggered or run the action like animated attack,walk,etc
that we could import it.
new plugins introduce: https://github.com/JannisX11/blockbench-plugins/pull/71
The actual animation library is available here: https://github.com/bernie-g/geckolib
discord server to ask for imformation: https://discord.gg/MNQcKxB
I will attach example animation files.
If this is possible its would be really cool.