Here's a little secret¹: roll film has no aspect ratio at all until it is exposed. It is just one blank piece of film a specific width and any practical length, sometimes with perforations occupying the outer edges that leave a strip of a certain width in between the perforations.

What determines the dimensions of the photo is the size of the film plane each specific camera allows to be exposed each time the shutter is opened.

Movie cameras that used 135 format film, for instance, classically used a frame 24mm wide and 16mm tall (plus a 3mm gap between frames) as the film was going through the camera vertically oriented (the perforations were on the right and left of each frame).

135 format still image cameras typically run the same film size through in a horizontal direction and expose about 36mm of width along with the 24mm of height per frame (with the perforations above and below each frame) while leaving a 2mm spacing between the edges of each successive frame.² This is exactly twice the linear length of movie film that used 16mm + 3mm per frame. So movie film used exactly 4 sprocket holes per frame, 135 film uses exactly 8 sprocket holes per frame. The center of the sprocket holes are 4.75mm apart for all 135 format film, both for movies and stills.

Some film types, such as 135 format 35mm film, were more standardized across manufacturers lines. Other film types, such as medium and large format sheet film, were not. How much border between the exposed film and the edge of the standard sized negative could vary significantly from one camera maker to the next and sometimes even from one model to the next within a single maker's model lines.

Probably the most standardized format as far as roll film for still images goes was 135 film used in 35mm cameras. The camera usually allowed a 36x24mm area of film to be exposed, but not all of that area was usually included in the print. What was included in the print was fairly standard, though.

Back in the heyday of 35mm film cameras, most U.S. printing labs cropped each frame by around 5% to avoid printing rough edges. Most viewfinders on 35mm cameras were only about 95% coverage (so you didn't see the full field of view being exposed on the film, but rather the 95% that was actually going to be printed by most labs) or had a 100% viewfinder with indexing marks inscribed around the edges of the view screen that showed you where the 95% lines were. There were also technical issues with film that made the outer edges a little less precise than the middle of the frame in terms of optical performance. Japanese labs cropped the long edges only and printed the center 34.2mm x 24mm. Even today the standard 3R print size in Japan is 127mm x 89mm (5" x 3.5") which yields a ratio of ≈1.427:1. U.S. labs once did the same when producing 3 1/2" x 5" prints. When the U.S. moved to the larger 4" x 6" print, labs typically printed the center 34.2mm x 22.8mm of the 36mm x 24mm that was exposed.

The Wikipedia article for Film Format is a fairly comprehensive resource for various film formats that were offered and the size(s) of the exposed frame when using various films. As you can see on the first chart at that article, there were 4 common frame sizes that used 120/220 film (the only differences between 120 and 220 are whether or not it has opaque backing paper and the total length).

In addition to the ones listed at the article linked above, the Wikipedia article for 120 Film includes several additional format sizes.

¹ It's not really a secret, but there are a lot of folks who have shot film for a long time who don't realize this.
² https://en.wikipedia.org/wiki/135_film