I created a list of casino that gives dividends to their token holders as you can find here
https://bitcointalk.org/index.php?topic=5353217.0 Sorry in advance as I have not updated for a while, but you can check it as your references or you may give some more information about the casinos with similar feature that are not on the list yet.
That's a good start so please update it. Also add marketcaps and ROI, tokenomics small description/comparison etc. Actually a web page updating this info in real time would be better. With referrals and ads that could be profitable for anyone with skills to do it (hint).