apushatayid, calm down. No need to yell at me.
FYI- Who mentioned anything about kosherquest? I didn’t. In any case, I don’t think that’s a reliable list anyways. There are several unreliable hechsherim on there.
Rabbi Belsky and Rabbi Heineman are credentials already. You don’t need credentials for the credentials. They’re chashuva well known Rabbonim.
And that goes with all the other reliable kashrus agencies. They work with one another and they all respect each other.
If you look at other reliable kashrus agencies, they usually say why their reliable, either they have a beis din, or a rav, a posek etc. who tells them what to do.