The resistance profiles of Descovy and Truvada are identical. They have to be, because the active forms of the two drugs they are made of are the same. Tenofovir disoproxil fumarate, in Truvada, and tenofovir alafenamide, in Descovy, are just different pro-drug forms of tenofovir. The alafenamide helps the tenofovir get absorbed into the body and transported to the cell nucleus where it has its effect, and is superior for that purpose to the disoproxil. Therefore, the total dose can be lower and causes less side effects.
The prescribing information (for Descovy) says the following about the HIV mutations that cause resistance to tenofovir and emtricitabine when used for PrEP: