These are all certified "generic tank" tank props which can go in this category: https://www.imcdb.org/vehicles.php?make=Made+for+Movie&model=Tank&

https://www.imcdb.org/vehicle_18197-Made-for-Movie.html
https://www.imcdb.org/vehicle_68915-Made-for-Movie.html
https://www.imcdb.org/vehicle_106830-Made-for-Movie.html
https://www.imcdb.org/vehicle_143857-Made-for-Movie.html
https://www.imcdb.org/vehicle_160287-Made-for-Movie.html
https://www.imcdb.org/vehicle_271277-Made-for-Movie.html
https://www.imcdb.org/vehicle_441786-Made-for-Movie.html
https://www.imcdb.org/vehicle_441786-Made-for-Movie.html
https://www.imcdb.org/vehicle_930346-Made-for-Movie.html
https://www.imcdb.org/vehicle_1069013-Made-for-Movie.html
https://www.imcdb.org/vehicle_1228811-Made-for-Movie.html
https://www.imcdb.org/vehicle_1349215-Made-for-Movie.html
https://www.imcdb.org/vehicle_1706491-Made-for-Movie.html
https://www.imcdb.org/vehicle_1836538-Made-for-Movie.html
https://www.imcdb.org/vehicle_19278-Made-for-Movie-1981.html

Made for Movie 'Stealth Tank' these two
https://www.imcdb.org/vehicle_131330-Made-for-Movie.html
https://www.imcdb.org/vehicle_132309-Made-for-Movie.html

I also noticed that some AMX-30s are under "ARE" (where did that name come from? should be AMX - Ateliers de construction d'Issy-les-Moulineaux) and some are under GIAT. They should probably be merged.
https://www.imcdb.org/vehicles_make-ARE_model-AMX-30.html
https://www.imcdb.org/vehicles_make-GIAT_model-AMX-30.html