LOL my first suggestion was going to be Proko so I'm out of ideas for suggestions :')
My OTHER go to for practicing/follow alongs are usually Chris Hong's videos (for colouring and sketching) Ethan Becker's breakdown videos and Michael Mattesi's!
If you're looking for structured courses (and follow alongs) for Anatomy, I'd give FORCE with Michael Mattesi's a try! I purchased his book after discovering it from TBChoi's livestreams years ago and it's been EXTREMELY helpful for breaking down the anatomy of the body while simplifying the dynamic of the pose, muscles, cloth etc :)! Or Fine Art Academy for Protrait Sessions!
Most times my go to's tend to be artists that inspire me and seeing if they have videos of their breakdown or sketch sessions on Youtube. Hope this helped a bit