The one I'm most familiar with is longsword, as that's what our group trains with predominantly. I also really love one handed sword&buckler - I'm not necessarily good with it but it's super fun.
I assume you mean greatswords and such? Those are cool for sure, but I can see people having reservations due to safety for sparring nd such - though correct me if I'm wrong, those were not much used in duel scenarios and such - how do you generally use them, outside of solo drills?
Also, in terms of safety - I just saw a review of a zweihander trainer by Regenyei, looked interesting. Basically an upscaled longsword feder by the looks of it - unfortunately the guy only talked about it with sword in hand, and it was a close-up so it was not very well done review, but it might interest you these exist now. I at least didn't see any up until now.
Anything that requires two hands to reliably use. We use the term to refer to greatswords, spears, and the like.
correct me if I’m wrong, those were not much used in duel scenarios and such - how do you generally use them, outside of solo drills?
The only people willing to duel with people using these weapons tend to be people that use these weapons. I was told all the reasons why not to use them before I started, with "and it will hurt a lot" given between each of the other reasons. Basically this: