ChuChu TV is responsible for widely-viewed toddler content on YouTube
I strongly recommend that you don't let your kids watch YouTube. There's some really low-quality garbage out there and there's just too much to properly curate. After some exploring on my own I absolutely do not trust YouTube at all to filter appropriately. This is just pure garbage streaming into your kids' faces.Do anything else, Netflix at least has some barrier for kids content... but torrent a bunch kids shows if you have to.