As a way above, a medium sized metal circle gate, as long as it’s wide enough so you can back wheel push it thru.
Also, a standard stile but with the top of the fence being planked(and solid) and wider(along the fence)than the stile, so you walk up the stile and can lift the bike up onto the top plank at the same time, balance bike on motor then get one leg onto other side and help bike down.
Bear in mind that modern bikes are massively long and have massively wide handlebars, as well as the huge weight of most e bikes.