In my part of the world, there are at least a dozen+ culinary and/or medicinal mushrooms that are distinctive and easy to identify (even by casuals like me). These don’t really have any dangerous look-a-likes that also grow in the same area. I stick to those and those alone. Granted, even at 12 or so species that I can ID, that’s probably like a tiny fraction of the number of different species that exist in this area.