I have chocolate mint and I find its not as hardy as other varieties.

It does really well with fairly wet and shady conditions (I had it under my elevated rain barrels and it did great, but didn’t spread beyond that) and poorly otherwise (since moving the rain barrels and exposing it to constant sun, it doesn’t want to grow much at all, much less spread).

Idk how much that’ll help your quest, but perhaps it will :)