Levo is the reference "trail" e-MTB while Kenevo is an "enduro" one. (Trail MTBs are better for climbing while Enduro are monsters more capable for downhill). Interestingly, many e-MTBers are now interested in the SL versions of these e-bikes.
The Vado and Como have entered the market earlier and most of the starting questions have been answered/solved. It's hard to buy them presently so there aren't many newbies around. The happy Vado and Como owners seem to ride out instead of hanging around in forums.