I gatekeep my children's access to YouTube/Netflix/Disney content, basically only allowing certain channels.

Super Simple Songs is one that my kids basically learned a bunch of songs from, and remain part of the audio playlists that I put together for my kids. The affiliated "shows" (Bumble Nums, Mr. Monkey) seem OK by my standards. They seem professionally produced and not geared to manipulate kids' attention spans. I wouldn't go as far as to say that they're truly educational, but they do introduce some concepts that I can flesh out on my own with my kids.

Storybots on Netflix is probably my favorite thing for them to watch. Good educational content that is actually accurate without being overwhelming. The songs are pretty fun, too.

Bluey is great. There's a genuineness to it that is pretty unique in children's programming.

Octonauts is good for teaching about animals in the ocean, but I don't enjoy watching it myself. They don't really bake in stuff to keep the parents engaged, in my opinion.

PBS content (and Sesame Street content wherever licensed) seems pretty good. My kids don't actively stay as engaged as with some shows, but they have enjoyed Wild Kratts, Daniel Tiger, Curious George, and some other programming.

I actively avoid Paw Patrol, and Cocomelon is outright forbidden in the house. Also, a bunch of colorful kids channels on YouTube are banned, too. I don't need that short attention span brainrot, especially when my kids already likely have mild ADHD (just as I do).

Things will get more challenging as they get older, but while they're still in toddler and elementary age I can still largely keep them away from the vast majority of YouTube and steer them towards professional/studio produced programming, especially by nonprofits.