Yeah, the main dif in the two is usually the shank. The Karl Erik has a round shank & a really tall cone, so I'm not really sure how I'd categorize it. Volcanoes being by nature wide-ranging in shape, I may just call it a freehand & be done widdit. -laugh-Love the pipe and shape . . .
I think the main difference between the Comoy's Bent Bulldog View attachment 52582 View attachment 52579
and the Rhodesian is the Rhodesian's round shank/stem.
Same goes for the straight Rhodesian View attachment 52580 and straight Bulldog.
Now to make things even more interesting there the Comoy Bermuda View attachment 52584 (shape 6660).