WW2 Orders of battle availability

[Imp]

Hi all I am intreasted in rough composition of forces in WW2 so if anyone could post good books on or links to websites or own spreadsheet would be greatly appreciated. Realise its a big subject.
My understanding generalising a lot

On transport
Only Yanks had halftracks in numbers Brits Russia very rare & even Germany most troops walked a truck being a luxury. In fact because of this even if had halftracks would only use in front line if had to, lose it your walking mate.

The ratio of tanks to troops was much lower than present day especially if take repair & refit into account.
Infantry Formations
Germans would often have no tank support though Stugs possible.
US Brit Russia will nearly always have a platoon or 2 of tanks available as support.

Heavy Tanks (Tigers ISUs etc)
Tigers company 1/3 - 1/2 Tigers rest MKIV unless lucky
Panthers 1/2- All can be Panthers actually fairy common late war, well good percentage of remaining tank force.
What about late war heavies for Russia USA rare but composition.
Also Russia KV series.
Then there is Russian light tanks early war
Cruiser Tanks Brits Russian BT series.

Tank Destroyers
Are they generally assigned to Armour or Infantry formations. Guessing former exept US who may give to either.

Help have not even touched other stuff using a semi realistic force is not easy