If someone makes a payment / donation, you get notified of the amount. You can download a list of the payments and sort it to see who paid the most.
But unlike Patreon, there isn't a simple way to classify people into groups. You would need to do so manually, and then find their requests in your comments.
Tip: you might not get any donations, many games here have never earned a cent. First make the game, get players, then worry about adding content.