It is standard on all US-market '22 Niro EV. I can't speak to past history.
I don't even remember this thread much since I don't visit this site much but since OP mentioned '17 Bolt, on '17 Leaf, DC FC inlet was optional. See specs tab of https://usa.nissannews.com/en-US/releas ... -press-kit. It was part of the charge package on the S trim.
Ditto for '18 Leaf and '19 Leaf , see specs tab of https://usa.nissannews.com/en-US/releas ... -press-kit and https://usa.nissannews.com/en-US/releas ... -leaf-plus (not standard on non-Plus S).
https://usa.nissannews.com/en-US/releas ... -press-kit - '20 Leaf, DC FC port also not standard on non-Plus S.
https://usa.nissannews.com/en-US/releas ... -press-kit - also not standard on '21 non-Plus S.
For your hypothetical situations listed in March, the answer is easy, don't take a BEV w/o DC FCing for that.