Your Cards

That sounds about right!

Mine are:
Game cards Sleeved
Sorted by country & alliance. An Axis box & an Allied box.
Divided by type; infantry/support weapons/artillery/vehicles-type/transport/armor-turreted/non-turreted/armored cars/aircraft
One card per unit, all game use cards in a clear Plano box, any revised card is printed & in sleeve. All other cards in boxes & stored.

Note - When the revised cards were released I printed one of each card at considerable expense on self-adhesive paper. I cut them out and stuck one example over each card, so that the top unit in each card sleeve is the revised card and cost.

After type:
Infantry-Commanders, Heroes, Snipers, Spotters, Engineers, Elite Troops then Regular Infantry
Support Weapons- BAR 's, BREN's, Thompsons, Stens, Ppsh, Machine Guns, Light Mortars, Bazookas, PIATs, ATR's
Artillery-ATG, AA Guns, Large Mortars, Artillery such as Pack Howitzers, G18, anything towed with Indirect Fire
Transports-Jeeps, Trucks, Kubelwagens, Halftracks
Armored Cars-also mobile AA vehicles
Non-Turreted, this includes Self Propelled Artillery
Turreted
Aircraft
This is for mainly the US,UK,USSR & Germany, countries with lots of different vehicles. For others, basically the same but all together. Italy, Japan & Minor countries are Transports, Armored Cars, Tanks & then Aircraft.
Does this help explain my system?

My cards are stored in collector sheets and binders. One for Axis, one for Western Allies and one for Russia.
Generally, infantry followed by armour.