I will release some videos for each of the workflow tests I have been doing as well. Hopefully by sharing these I can shed some insight into other to the animation process for other animators but also if I am overlooking something, then someone can also help me out.
The first animation test I did was a combination between Adobe Animate (used to be Flash) and After Effects. I used to use Flash when I was in college so I have some familiarity with it. Some of my initial thoughts are, while I enjoy the timeline and being able to see the keyframes, I am not entirely sold on the brush or pencil tool in that program. That might be the deciding factor, but we'll see. Like I said before, I will do a video soon about my exploration.
The next workflow I am going to explore is going to be a new plug in for After Effects, called Paint and Stick. This allows for frame by frame animation inside of After Effects with a visible timeline for each frame. My initial thought is that it also supports brushes from photoshop, so I can have more of that hand drawn feeling as opposed to the clean vector look of Animate. My concern however, with this workflow, is that file size could get out of control. All of the Paint and Stick data is saved outside of After Effects. If my initial testing looks like this is going to be the route to go, I will do a little bit more of an in depth animation test to see if I can gauge how large files could get.