https://screenrant.com/mash-best-characters-ranked/

Though there are very few characters in MASH who aren't beloved by audiences and critics, these individuals rise to the top as the best of the show.

Potter should be higher.

And I'd put Winchester on there somewhere. I used to never watch M*A*S*H, thought it was too preachy. It was Winchester's storyline in the finale that got me to binge watch the show. I definitely think he's a better character than the one he replaced, Frank Burns. Has more depth.

Yes, I would place Potter higher than Blake.

Yes, I would place Potter higher than Blake.
Same. Henry was popular with a lot of people though.