I get the impression that, generally speaking, the overall touman sizes for each of the clans was split into 3 tiers.
Tier 1 clans include Clans Wolf, Jade Falcon, Ghost Bear, and include enough warriors to fill out 4 front line galaxies and 5-6 second line galaxies. The Smoke Jaguars and Star Adders both were likely not quite tier 1 but also a bit better than tier 2, and probably both had 4 front line galaxies and 5 second line galaxies (the Jaguars likely artificially inflated their second line number, given hindsight).
Tier 2 clans include the vast majority of the clans, and likely included 3-4 front line galaxies and 4-5 second line galaxies. All three reserve clans would be included here, as well as the Coyotes, Scorpions, Cobras, Snow Ravens, Horses, Burrocks, and before the Burrock absorption, the Blood Spirits.
Tier 3 clans would have been clans which nearly always had a major lack of resources and had problems with unity. These primarily include the Hellions and the Mandrills. They likely include 2-3 front line galaxy equivalents and 3-4 second line galaxies.
Those are my general opinions on the sizes, if we pulled back to around 3040, the overall sizes of most toumans may have been as much as 2 galaxies smaller, and prior to 3100, may have seen only the largest clans being more than 5 galaxies in front and second line strength.