There are a few more categories in there 4) conspiracy theory guests that he wants to get more information out of or find out if they're full of shit 5) subject

There are a few more categories in there 4) conspiracy theory guests that he wants to get more information out of or find out if they're full of shit 5) subject matter experts on topics that he's interested in, and more recently 6) the ones that feel like they're looking for the Rogan Bump and have probably been told to "go on Rogan" by their publicists, I have mixed feelings about this group since it's good to see them react to Rogan's interview style but it also feels like he sometimes softballs them out of deference or maybe just general politeness.