If only there was some body of regulation that could help sort this stuff out without influence from industry. (not sarcasm)

Agreed, but that regulation should be on purity and label accuracy, and not venture into "sorry, we don't approve of this -- you can't have it".

The ingredients list / packaging should say something like dried fruiting body... or if you're getting the rubbish = myceliated grain or mycelial biomass. The reddit link provided by NalNezumi is very good.

Here's just another link of some lighter details. https://learn.freshcap.com/tips/myceliated-grain/

Learn to cook lions main. It’s very distinct.