I thought of another possible guest, likely controversial, for your podcast:  Roger Spurr.  A man of probably over 70 years old, who claims he's been trying to get "academia" to discuss what he's discovered on various topics from biology and physics for about 10 years to no avail.  He has a recent YouTube channel, Mudfossil University, which isn't greatly organized but his older YouTube channel, which was more organized, he took down because of an overwhelming amount of attacks and trolls he was getting on his channel and I guess he couldn't handle it.  His email contact looks like it's been recently removed from his current YouTube page which now has 100k subscribers, though I believe he's willing to talk to anyone still.  Leaving a comment to one of his videos I guess would be the way he would know there is interest.