>>54609715Yeah I don't think they put a lot of conscious thought into it. There's millions of plants and they need to think of so many names, so they just took an easy source of inspiration I think.
As for my husbando, I don't think there's much meaning behind it, other than mint being a herb and his main story being about finding herbs. And I guess it's also food related.
There could be some intentional ambiguity about his name in Japanese because it can refer to both peppermint and pepper. Maybe it also refers to the dark stripes in his hair which you could call "pepper colored" but that's a stretch I think.
The Japanese name sounds absolutely silly in English, so I can understand that they went a pretty different direction, even if it still references a mint plant (mentha arvensis, wild/field/corn mint). It feels to me like the localization team wanted a "cooler" name for him because his story is so serious.