Most racers using short course trucks. I personally use a bit of a old school tread. On my slash i am running Schumacher Mini Pin SCs (Blue compound) and they work really well. Although its meant ideally on early versions of the Light EOS carpet and some lower traction office carpet. If you are running on black crc or more of the modern style fuzzy EOS carpet, I usually cut the pins on the front tires atleast to numb down the front to not traction roll. At my old local track, the old old one had black crc and new out of the pack mini pins worked well. But on fuzzy EOS carpet I cut 2 rows of pins on the front tires. 2 rows on both the inner and outer sidewall to numb the steering.
Most people today use Fuzz Bites in the rear and swaggers out front, mostly popular in 2wd SCT. 4WD SCT might not be the best but can work. Or fuzz bite front and rear can also work. Or similar compound pin tires from other brands work too.
Best bet is too see what the local racers use, or see what the hobby shop stocks.
Trying to remember what else tires are out there. I believe ProLine has the Prisms for SCT, don't know if they still make em or not. There are/is more tires and more tire availabilities for buggies today since they are bigger and more popular because most carpet tracks are trying to limit or dying down on truck classes like short courses. Like All 3 of my local carpet tracks don't run or allow you to run 4x4 SCTs anymore. I used to race em back in the day at a old track 10 years ago and SCT on carpet was super fun. (That was 4x4 btw. Now most only allow 2wd's)
