In many ways I think we are going through.a golden age in running YouTube. Sure most of the runfluencers are terrible and pushing useless products, however, we have some actual top level talent putting out good 15-30 minute videos. The likes of Clayton Young, Jakob Ingebrigtsen, Alex Yee and Phil Sesemann to name but a few.
I'll provide a shout out to some of our Australians with Izzi Batt-Doyle and Andy Buchanan releasing videos. They may not have the same production quality, and perhaps they are slightly more awkward/not accustomed to being filmed, but if you care about running and pro-level training, they are really good. I would be interested to hear about some other small pro-athlete channels outside of the big channels and even outside of the big 2 counties (USA and UK).