Despite what others say here, I would say sort off...

Right now you get something which gives similar performance to AMD cards of the same price category, but with more compatibility issues. However, you might be willing to take the risk, as in theory the ARC hardware is significantly better than similar priced AMD hardware, just the drivers (neither on Windows or Linux) are not good enough to fully utilize it (well that or older games don't make use of the more modern architecture of the Intel GPUs).

Nvidia doesn't really compete right now as their hardware is just over-priced and without open-source drivers is pretty much a no-go on Linux anyway.