I agree with Chas, that #3 is too deep. But #1 has the problem of the third/center belt hanger which would interfere with a belt buckle - either your belt would be offset when the sporran hangs centered, or the pouch would be offset left or right to wear your belt buckle centered. #2, with it's two hangers, appears to have enough of a gap between the two hangers to allow for a belt buckle.

(I would not suggest these would be appropriate with a sporran strap, since straps conventionally secure to a point nearer the middle of the body of the sporran. These pouches, on the other hand, having belt hangers built in, would hang far too low from a strap. These are definitely designed for attachment to a belt, hence my thoughts about the buckle interfering with #1.)