I don't know how far north you are going but Dave Wilson Nursery makes some incredible videos for growers. They do a lot of business with Zaiger Genetics which are responsible for most of the interspecific stone fruit crosses. They might be good to contact and explain your youtube channel. I'm not sure what would be in season right now but Dave Wilson might have some weird pomegranates or apples.
Tropic Fruit in San Jose had fresh unfrozen durian when I was there as well as a bunch of other stuff. Stay away from the mangosteen. No bueno.
https://www.yelp.com/biz/tropical-fruits-san-joseThere was another Asian fruit store a few doors down that had some different dried stuff as well.
Love the series. I have watched at least 85% of them.
UC in Riverside did a bunch of genetic testing on dragon fruit and have a test planting. I'm not sure on the season out there but I have fruit on mine here.
Lots of backyard annonas, especially from people on this forum.