I don’t know from an advertisers perspective it seems like JRE is pretty mainstream. I don’t recall them having trouble getting sponsors in the past.
It seems like all I hear are the usual suspects: Me Undies, Blue Apron, etc.
On other hand, I'm not entirely sure how I feel about the companies marketing on things like pod casts... Some pretty famous ones don't seem to be too special products, see Raid Shadowlegends, Raycon and all of the VPN providers...