Millers oils do the same in the UK with their JWS ATF which is used in my PSA cars.

They claim their fluid is a substitute for JWS3309 and JWS3324. When pouring it, it’s got the same sort of viscosity as 3309 but is much thicker then the official 3324.

I don’t understand how they can claim 1 fluid does all when the manufacturers specify 2 different fluids. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior
2013 Range Rover Sport SDV6 HSE Black Edition in Santorini Black with Ebony Interior