Generally speaking, electric bikes drop into your identical groups as non-electric bikes. Here's A fast summary of many of the styles of electric bikes you'll find. If you are just wanting to get out on the bike, aluminum is great. Carbon fiber is costlier, lighter-weight, and stiffer than aluminum as https://tedomarket.com/product/sports-entertainment/cycling/bicycle/bmx/sleek-gold-frame-bicycle-black-handle-diy-bikes/