If you're looking to do more uh...controlled RWD drifting, you'll want to start with something Rear wheel drive with not too much rear tire, maybe like a BMW M3 or something. You can give it a little more horsepower, but don't go too crazy (keep it under 500 if you're playing forza horizon, closer to 300 if you're playing forza motorsports.) Just start by practicing donuts in a parking lot, the whole idea is to be able to change the line you're making using the throttle rather than the steering. 90 percent of (rwd) drifting is throttle control, learning how much is too much and how much is not enough.
More gas, and you'll increase the angle of your slide, less gas pedal and your rear end will start to tuck in, eventually taking you out of a drift.
Lots and lots and lots of advanced techniques beyond that, but really start out with donuts is my advice as someone who loooves drifting and has been
doing it in video games since Gran Turismo 3.