It's pretty much just Stake and the rest of the gang. Although Roobet has a bigger share than others, it's still a significantly smaller slice. Stake's dominance is apparent. Even 30% of the top 20 are only having less than 1% of the market. Apart from Stake and Roobet, the rest have single digits.
I'm not confident of the accuracy of this, but I won't be surprised if Stake remains as the most dominant crypto gambling platform given accurate data.