many of these smaller pools actually are nothing but a relay/proxy that uses other large pools, not to mention names but if you were to dig into it you would see that.
You dont even need to dig in really, you just need to go to mempool.space and see who finds the blocks. It is basically always the same. TO me it is already not that far away from a centralization, because if just one big pool will go down we will see basically another big one instantly gain enough hash rate to be close to 40 or even 50% .
