I believe that at different points in time the name Ranger was used by both of these Mail Order companies. I have a re-print edition of a 1927 Sears catalog & a ranger very similar to this one is listed in it. I cannot actually say it was made by Stevens, but certainly has that appearance in the illustration. I do not recall off hand if the illustration is good enough to make out the pin placement or not, but in 1927 from Researcher's data it would seem to have been the G S Lewis designed action.
At one point in time I had a 20 gauge based on this Lewis action named Central Arms & my Dad had a 16 gauge with swinging hammers named Eastern Arms. Any differences in the frame profiles were virtually unnoticeable except for the pin placements.
