I would probably put them like this (this is done quickly, mainly just general knowledge, and no specific research). I'll seperate them into 2 categories
Defensive Awareness:
Lionel Conacher
Lionel Hitchman
Sylvio Mantha
Red Dutton
Earl Seibert
Hap Day
Ching Johnson
Eddie Shore
Red Horner
King Clancy
Ebbie Goddfellow
Body Checking:
Ching Johnson
Red Horner
Eddie Shore
Earl Seibert
Lionel Conacher
Red Dutton
Hap Day
Lionel Hitchman
Sylvio Mantha
Ebbie Goodfellow
King Clancy
Important to mention that not much seperates most of these guys
how could you possibly rank players in defensive awareness from so long ago?
Based on the comments from boucher it seems like hitchman was a serge savard type of player and clancy was the brad park/red kelly of his times. Earl Siebert seems to be ranked high defensively and he has longevity, i think he should be ranked 10-15 spots higher on the next top 100, he's better than scott stevens and pierre pilote.
hitchman was apparently more of a purely defensive player than savard.
i cannot think of a similar player to clancy. clancy was small, very fast, very feisty, very good offensively and also a good defensive player. early in his career with ottawa, he was a substitute at both F and D, and even once played G after his goaltender was penalized.
something that makes me unsure about earl seibert is that 3 of his 4 1st AS's were during WW2, and he was regularly beaten for AS's by converted F's.
babe siebert, ebbie goodfellow, dit clapper took 8 1st AS spots during seibert's prime.
but i think left d-man and right d-man were distinct in AS voting during that era. eddie shore usually took 1st AS right d-man. but we would need to know more about AS voting and which players played right and left to have a better understanding.