Seeking Advertiser List for Beehiiv Ad Network Preferences

I'm sure this has been asked before... but I was filling out my beehiiv Ad Network preferences... and in addition to one category that I think is a good fit, and one category that I think is bad fit (I'd prefer to give multiple of each, but OK)... it also asks for specific advertisers I'd be interested in having for my newsletter (which btw is https://nowtakingthefield.beehiiv.com/) But I have never been able to find a list of the advertisers in the beehiive Ad Network! Perhaps for competitive reasons with other networks that is a closely guarded secret, but I don't see how I can list companies -- other than the very few I know of in the network (because they have sent me offers, like 1440). I've googled, used reddit, etc. -- and can't find a list anywhere. Any help? I'd love to know who the advertisers are so I can indicate ones I'd most like to work with, get offers from, etc. My newsletter was on Substack for 2.5 years, but I'm new to beehiiv and looking to finally expand and monetize in 2025!