Electric road bikes use a similar groupsets that regular road bikes do, but with a lot more pressure currently being place about the gears, it’s most effective to have a large-power established like Shimano Ultegra or GRX. If you've the gravel bug and the budget to transcend this variety, then https://onlinedigitalstore.net/collections/road-bikes?srsltid=AfmBOoq-ckRHlJ6_fn6x6AKzVmIB-SWo1N_v7pypbxnuOq6I2PSleFW0