Indeed I could do that latter one, two were listed that way

That's what I would do. Or "Vickers" as the make and "Crossley Armoured Car" as the model

I Updated the Citroën, I wasn't sure indeed if they kept the B2 or not in their model name

About Crossley, if you think it is better, I could list them as Vickers as make with Crossley in extra info then?
Or would it be better to have both names in the make name?

You could I guess, but "Vickers" always comes first in the way it's written about in books. I don't have any primary material that talks about it or I would defer to that.
Type 87 Armored Car is the Japanese military designation yes. None of them were actually built in Japan, that's old wrong info.

Thanks
This one still isn't quite right. The name was simply "wz. 28" (or "Samochód Pancerny wz. 28" for long), no "B2" in the name. Everywhere online seems to report the chassis as a "Citroën-Kégresse B2", but the Kégresse versions of the Citroën B2 were K1 (which this is not) and P4T, which is the chassis the wz. 28 used.
so it should be CWS wz. 28 on Citroën-Kégresse B2 P.4T if you want to specify the chassis; there was no other version though
https://www.imcdb.org/vehicle_285194-Citro%C3%ABn-K%C3%A9gresse-B2-wz-28-1928.html

We could list them as Crossley (the chassis) with Vickers as extra info (the body), as suggedted in https://www.imcdb.org/vehicle_634952-Crossley-IGA1-Type-87-1925.html
So Type 87 is for the Japanese military model?

Citroën-Kegresse B2 K1
https://www.imcdb.org/vehicle_1231622-Citro%C3%ABn-Kegresse.html

Citroën-Kegresse C4 P.17 (ID is correct, it's just listed different compared to the rest of the same model)
https://www.imcdb.org/vehicle_1812372-Citro%C3%ABn-K%C3%A9gresse-P17.html

I think that this should probably be listed as CWS wz. 28, rather than under Citroën-Kégresse. CWS is already in the additional info, that is the Polish factory that built these, based on the chassis they bought from Citreon.
https://www.imcdb.org/vehicle_285194-Citro%C3%ABn-K%C3%A9gresse-B2-wz-28-1928.html

Pz.Kpfw.38(t) Ausf.D (To be consistent with the way other panzers are named). Built for Germany, not built in Germany.
https://www.imcdb.org/vehicle_1770252-CKD-PzKpfw-3829-Ausf-A-D-1939.html

Cletrac M2 High-Speed Tractor, model code MG1
https://www.imcdb.org/vehicle_1482870-Cletrac-M2.html
https://www.imcdb.org/vehicle_1483948-Cletrac-M2.html
https://www.imcdb.org/vehicle_1867050-Cletrac-M2.html - clear additional info
https://www.imcdb.org/vehicle_130289-Cletrac-MG1-1941.html - clear additional info

These two makes should be merged, as they are the same thing. Consolidated Diesel Electric Company, CONDEC
https://www.imcdb.org/vehicles_make-CONDEC.html
https://www.imcdb.org/vehicles_make-Consolidated+Diesel+Electric.html

Name is correct, add "G-40" as the model code
https://www.imcdb.org/vehicle_195568-Coleman-MB4.html

Corbitt 50SD6
https://www.imcdb.org/vehicle_1248058-Corbitt.html

Crossley 29M (no "A", no space between 29 and M). Made for Hungary.
https://www.imcdb.org/vehicle_1165273-Crossley-A-29-M-1930.html

I discovered that the Vickers-Crossley Armoured Car has some entries under Vickers and some under Crossley. I don't know if you want to create a new make specifically for these, since they were built cooperatively with Vickers doing the armor and Crossley doing the chassis (hence Vickers-Crossley), or just put them under Vickers and set Crossley as the model name. I don't really care either way. I don't know if "Model 25" is actually a real, valid name. I've always seen them called just "Vickers-Crossley Armoured Car". "IGA1" can be set as the model code.
These two are regular British examples:
https://www.imcdb.org/vehicle_647567-Crossley-IGA-1923.html
https://www.imcdb.org/vehicle_171607-Vickers-Crossley-Model-25.html - clear additional info, that is wrong
These two are Japanese examples. Please add "Type 87 Armored Car" as the additional info and set origin England, made for Japan.
https://www.imcdb.org/vehicle_634952-Crossley-IGA1-Type-87-1925.html
https://www.imcdb.org/vehicle_1636374-Vickers-Crossley-Model-25.html

Model code "JM"
https://www.imcdb.org/vehicle_373170-Chiyoda-Type-94-1937.html

Remove dash from "CGT", move "Cab 12" to additional info like the others have it
https://www.imcdb.org/vehicle_169617-Chevrolet-C-GT-FAT-Cab-12-1941.html

FMC M113, origin USA
https://www.imcdb.org/vehicle_1361261-DAF.html

Csepel D-442 FUG
https://www.imcdb.org/vehicles.php?make=Csepel&model=FUG

Csepel D-944 PSZH (As far as I can tell, PSZH and PSZH-IV are the same thing)
https://www.imcdb.org/vehicles.php?make=Csepel&model=PSZH
redundant info on this one: https://www.imcdb.org/vehicle_157449-Csepel-PSZH-IV.html

Most of these fake Humvees are listed under "Custom Made HMMWV", except for these two
https://www.imcdb.org/vehicle_953345-Custom-Made-Hummer.html
https://www.imcdb.org/vehicle_1632660-Custom-Made-Hummer.html

Yes. I didn't catch that one either

sorry I didn't modify the right one indeed

This one should be ChTZ then I suppose?
https://www.imcdb.org/vehicle_236531-ChKZ-KV-1S.html

Now it's backwards lol. ChKZ IS-2, ChTZ KV-1