From my experience, sims that are the best at "tricking me" are also the most realistic.
But the most realistic driving wouldn't be enough to make me enjoy and drive that sim!
And then there is Wreckfest, which holds a special place in my heart.
Completely unrealistic but at the same time it feels 100% exactly how I would imagine to drive an insane car in the dirt.
Drifting is enormous fun, input to car reaction is very believable for me!
Basically, going sideways at 150 kph in that game feels exactly like my 120 hp mb c-class did at 10-20 kph on snow in an empty parking lot
And if you get in a "clean race" server, you can really show your skills with a wheel and a good dance on the pedals.
But otherwise, AC is great for the RD club races since the driving is very nice, at least somewhat on the realistic side but at the same time it has a lot of restrictions, which make it very accessible for 20-60 minute races!
ACC is a bit more realistic and is a lot more immersive with cut detections, penalties, rain, night, rolling starts etc but it's a lot less accessible due to that.
Forza, project cars, gt sport are all less enjoyable for track racing for me due to the car just not feeling realistic...