here's an index of Custom ROMs available for our Moto E3 Power. This roms are not mine i have just made a list of custom roms with xda link.
NOTE:- for moderators i try to find any post related this but I can't find so I decided to...
Here is Moto Gallery for our Moto E3 Power. Simply download and install Apk.
Credit - rmnpreet786
Download link -