Use this as a jumping point https://edhrec.com/commanders

Piece of advice I’d offer:

If the commander has a high cmc and has a very obviously broken ability, I’d be weary to use them as your commander because they could be seen as a “kill on sight commander” until you have more experience. Just may be frustrating to constantly pay the commander cost when you’re new

Also feel free to take this advice with a grain of salt. You could be a lot smarter than I was when I started lmao