Here is a great one with a lot of good lessons and info.
Johnny Cox Music
Excellent channel indeed! I decided to give a bit more detailed overview here:You've probably seen this guy before as he made a serie of cool videos 9 years ago.
Dale Titus is back and his new channel is very good.
https://www.youtube.com/c/EverythingBass/videos
And I was deeply saddened to hear of Jim's passing earlier today, so here is my farewell...Jim Stinnett is a gem and his videos are nothing short of brilliant. He covers various topics, but mostly deals with jazz and RnB styles. The clips are just long enough, and Stinnet has a great presence. Oh, and even with his pedigree as a musician and teacher at Berklee, he uses mostly Squiers in his videos, thus effectively helping curb the GAS problem
Real Bass Lessons