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Honestly I think Japan wins here with NTR, male NTR is boring it's almost always wife/love interest(s) then daughter loses to big cock.
Women NTR is a bit more interesting with the wife not only losing her social status, her pride and her family but enjoying it to the point they can't do shit, I'm not saying male NTR can't achieve this but female doujin artists really have an edge for this, loli vanilla and gangbang as genres from Shoujo to female NTR there is only a label in distance.
Western cuckquean falls in the male NTR trap and becomes boring if I'm allowed to be honest.