What other kinds of fruits make good fritters?

As as rule, you want fruits that stand up reasonably well to heat and aren’t too wet, so citrus is out altogether. Of what remains I’d say bananas are a good choice, fresh peaches, pineapples, even firm ripe pears will work. Stay away from berries, despite what some recipe writers will tell you (they melt and/or explode in the fryer). I’ve also heard of people making fritters out of dried fruits like prunes and dates, but have never tried them.