I noticed there are two different vehicles listed under Mitsubishi Type 73, there's these ones, the Type 73 Armored Personnel Carrier, and the rest are the Type 73 Light Truck. I would recommend changing the names of these four to "Type 73 APC".
https://www.imcdb.org/vehicle_707793-Mitsubishi-Type-73.html
https://www.imcdb.org/vehicle_1099168-Mitsubishi-Type-73.html
https://www.imcdb.org/vehicle_1302636-Mitsubishi-Type-73.html
https://www.imcdb.org/vehicle_1864020-Mitsubishi-Type-73.html

https://www.imcdb.org/vehicle_1905170-Mitsubishi-Type-74.html - This isn't a Type 74. The Type 74 has a smooth, rounded turret and gun mantlet; this has an angular turret. It's just a generic tank.

https://www.imcdb.org/vehicle_219415-Mitsubishi-Type-74.html - Type 61 not Type 74

The Type 74 had different upgrades throughout its life, called Type 74B, 74C, and so on, ending with Type 74G. Only some of them like the D and G are easy to identify because of external differences. For the D onward that is a thermal sleeve on the cannon barrel, and for the G that is sideskirts.

Type 74D (or E, but there's no external difference between the two)
https://www.imcdb.org/vehicle_218045-Mitsubishi-Type-74.html
https://www.imcdb.org/vehicle_218103-Mitsubishi-Type-74.html
https://www.imcdb.org/vehicle_722579-Mitsubishi-Type-74.html
https://www.imcdb.org/vehicle_873513-Mitsubishi-Type-74.html
https://www.imcdb.org/vehicle_1073894-Mitsubishi-Type-74.html
https://www.imcdb.org/vehicle_1249645-Mitsubishi-Type-74.html
https://www.imcdb.org/vehicle_1866179-Mitsubishi-Type-74.html
https://www.imcdb.org/vehicle_1521059-Mitsubishi-Type-74-1974.html
https://www.imcdb.org/vehicle_1704175-Mitsubishi-Type-74-1974.html

Type 74G
https://www.imcdb.org/vehicle_975301-Mitsubishi-Type-74.html

https://www.imcdb.org/vehicle_218044-Mitsubishi-Type-78.html - Misidentified, Komatsu Type 75 MLRS (Multiple-Launch Rocket System). The Mitsubishi one is the Type 75 SPH (Self-Propelled Howitzer).

https://www.imcdb.org/vehicle_1453090-Mitsubishi-Type-90.html
https://www.imcdb.org/vehicle_1919735-Mitsubishi-Type-90.html
Misidentified, these are M1 Abrams

https://www.imcdb.org/vehicle_583757-Nihon-Nainenki-Type-95-1937.html - This Kurogane Type 95 is listed under "Nihon Nainenki" (日本 内燃機) which was Kurogane's parent company. The rest of them are listed under Kurogane, so this one should be too https://www.imcdb.org/vehicles.php?make=Kurogane&model=Type+95& This one is specifically the pickup truck version. The rest are the staff car version.

These two vehicles are the same thing. They should be called "TGE Type 92A Ni-Ku", as opposed to the other artillery tractor introduced in the same year, the Type 92B I-Ke.
https://www.imcdb.org/vehicle_377454-TGE-Type-92-1932.html
https://www.imcdb.org/vehicle_373166-TGE-Type-92-Ko-1932.html

There are Type 82s listed under Mitsubishi, Komatsu, and Isuzu. Mitsubishi designed it but Komatsu built them. I don't think Isuzu even had anything to do with it.
https://www.imcdb.org/vehicles.php?make=Mitsubishi&model=Type+82&
https://imcdb.org/vehicles.php?make=Komatsu&model=Type+82&
https://www.imcdb.org/vehicles_make-Isuzu_model-Type+82.html

https://www.imcdb.org/vehicle_1763296-Isuzu-Type-73-Truck-SKW-440-1973.html - This Isuzu Type 73 is listed separately by mistake. It is "Type 73 Truck" while the rest are only "Type 73".

These are Isuzu Type 97s. The TX40 was an earlier design. I'm not entirely sure what the model code of the Type 97 was, if it had one. Isuzu may have considered it a TX, just the military version of it, but the design of the Type 97 is closer to the TX60 and TX80 than it is to the TX40.
https://www.imcdb.org/vehicles.php?make=Isuzu&model=TX+40

The Isuzu Type 94's model code was TU10
https://www.imcdb.org/vehicles_make-Isuzu_model-Type+94.html

After these I am happy with the Japanese vehicles. There is nothing else I can find wrong, for now at least.