What Powerline Adapter is Compatible with my Xbox One?

I have TP-Link 500mbps ones and they work perfectly fine with xbox one.

I agree you should get at least 500mpbs as they lose speed depending on your houses wiring and the faster the speed the better.

With 200mpbs ones I could only get a maximum speed for 50mpbs even though my internet is 75mbps. After upgrading to 500mbps I now get maximum download speed on my xbox.

Those numbers are the maximum theoretical speed/throughput that can be achieved between the adapters.  In practice, you won't get anything close to those numbers but, depending on your electrical wiring, should get plenty for Xbox use.  I would get at least 500mbps adapters because the higher speed ones will generally have a newer, better chipset in addition to being somewhat faster than the 200mbps ones.  Also, if your residence has coaxial cable outlets in convenient places, you may want to look into MoCA adapters instead.  They can be much more reliable than powerline, especially if your residence has old/complex/noisy electrical wiring.