Alan Rockefeller said:

I am going to make sure people check the scales on the cap with A. tabescens, Armillaria usually has recurved scales while Omphalotus is always smooth.  The last pic is a good example, it has dots that look like scales but they don't actually stand up at all.  I thought it was Armillaria so when I saw the dots they looked like scales at the time due to confirmation bias. 

A lot of honeys have a ring so they can't look so much like Omphalotus.

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I understand what you're saying. I spent a good half-hour in the woods a few days back convincing myself that an old cluster of Ringless Honeys weren't Gyms while also trying to convince myself that they weren't Jacks so a taste-test wouldn't hurt (turns out the taste test is ambiguous with these funky old Honeys anyway).

Without personal experience in finding and examining Jacks I probably wouldn't have figured their identity (the young bottom cluster was what raised the flag for me).