Any chance you have stats on how many views those videos represent and any back-of-the-envelope estimate on what percentage of overall views that would be?
It is possible to do this relying on socialblade archive. In our dataset paper (https://arxiv.org/pdf/2012.10378.pdf…, to be presented at ICWSM) we estimate the percentage of Top K channels in our sample, varying K. I believe something similar could be done here