If your stance is to have no or minimal defederation then lemmy.ml is not the right choice, lemm.ee is: Compare blocked instances here with the same here. Besides lemmy.ml apparently not cleaning up their blocks (e.g. exploding-heads is defunct) they block e.g. lemmynsfw.com. Not really political that's just one that I recognised.

Also I couldn't find a federation policy for lemmy.ml, while lemm.ee has clear rules.