Jewess –
Listings of hechsher symbols and who stands behind them exist, but it is nearly impossible for “reliability” to be listed as well due to:
a) differing standards, even among the orthodox.
b) fear of lawsuits by organizations or individuals who “flunk”.
What we have done in the past, is get the listing, and then review it with a Rov we rely on and make our own notes as to which is OK and which is not.