Alright so I decided to look up some information on formations for grins to see if I could find some realistic numbers for medieval times, and the answer is that there aren't any hard numbers per se.
The best I can say is you can the following types and fit what you are looking for I think.
Scout unit (3-Units)
Squad Unit (9-Units)
Rabble/Group - A better name would work but its what most large units were called (30 to 60 Units)
Battle Formation - Essentially a large collection of the former unit (600-1000 Units)
Not sure how to break this down with the current group types except with maybe like you already mentioned in your previous threads and chance the numbering per unit to 10 times each one for display purposes. So you would have a scout unit of 30 men, a Squad Unit of 90 men, a Rabble of 300 and a Battle group of 6000.
More likely to fit with the game would be set them to them to only 3 types and make those specialized to fit with the total numbers realistically set.
Knights were in smaller formations of the knight itself as well as his retainers. Mages would likely fall into this category as well as their equipment is prohibitively expensive or they take a LOT to train. This necessitates the smaller unit sizes.
Pike and Archers would fit in the middle ground as they generally took longer to train (archers) or had better gear (pike) versus the common rabble did.
Finally Foot / Peasant Infantry would be at the bottom wearing a gambeson (padded armor) or leathers with some chain mixed in at the later periods when it was more mass produced. Basically fodder for the knight units until they had enough production to make better armor.
So based on this a small unit of 3 or 4 fits for the first tier.
A squad type of around 9 units fits for the next tier and would work for initial battle formations of knights and Mages
A group type of around 30 fits for the next army type tier.
Finally a last tier if its possible to add fits for a battle group / rabble / something of around 100.
I don't know if this is even possible to mix and match systems with the way you are trying to make everything 10 times larger but this is the best I can do without a lot more research. This sort of coincided with the armor stuff I have been researching so I decided to give it a stab and give you the result to work with.
Use what you like and discard the rest.