Refine your requirements even more
Top speed?
Motorcycle mode or PedElec?
If PedElec, how much assistance?
I am 6'5", 200#. Cannot ride a bike anymore, but have switched to something called a "Tadpole Trike.
The thing sucks canal water when climbing, and is no prize in a headwind.
What I want is something to help me out when I find myself grinding up a hill. No more. No electric motorcycle, just a little help when I need it.
The perfect choice for me has been a Tongsheng TSDZ2 pedelec mid-drive with a 14 AH 52-volt battery.
The way I ride, and keeping the battery between 20 and 80% capacity (which maximizes long-term battery life) I can get about 40 miles on a charge. But my bod only has about 20 miles in it, so it's all good...
If I could ride a bike, I would just retrofit the TSDZ2 to my favorite gravel bike and mount the battery to the down tube water bottle mounts.
Lots of videos out there on YouTube.
There's more. Ping me if you get interested.