The Maiers did a great job in their page on distinguishing between some Vostok sports watch models, but I have a feeling that a more comprehensive list can be drawn up. Let's make a start:
Amphibia: "0" third digit means stainless steel case
Case type: 350
Characteristics: swivel lugs
Case type: 420
Characteristics: "oversize" round case
Case type: 710
Characteristics: current model Ministry case
Case type: 060
Characteristics: long case with hidden lugs
Still need to find: case type numbers of octagonal case, small round case (which might be 920, requires verification), tonneau case etc, and add period of production for each and movement(s) used.
Komandirskie: "1" third digit means chrome plated brass, "9" means titanium nitrite plated brass.
Case type: 34x
Characteristics: "Generalskie" type case with smoothly extending crown guards.
Case type: 92x
Characteristics: round case
Case type: 21x
Characteristics: case with "stepped extensions towards the lugs, very small crown guards.
Case type: 43x
Characteristics: round case with angular tapering lugs and wide crown guards.
Case type: 81x
Characteristics: round case with flared lugs and small crown guards.
Case type: 53x
Characteristics: star shape case with 2 o'clock crown, first made as Generalskie, from 2004-5 sold as Komandirskie.
Still need to find: information on other case designs such as two types of cushion case. There might be a further variation of the non-star "Generalskie" case.
It would be nice if my learned members can add to this as a reference source.