There is no conclusive response to this question as everyone's taste preferences will differ. Nevertheless, some general pointers can be helpful when selecting a white wine for sangria.
For a fruity sangria, a red wine such as a Red wine or Rioja will work well. For a more refreshing sangria, a white wine such as a Sauvignon Blanc or a Moscato can be utilized. https://scarabnet.org/?p=666 And for a sweeter sangria, a dessert wine or perhaps a prepared white wine such as Port or Sherry can be utilized.
It is also crucial to consider the other components that will be contributed to the sangria. A sweeter white wine might be needed to stabilize out the flavours if the sangria will be greatly fruity. Alternatively, if the sangria will have more citrus flavours, a drier red wine might be more suitable.
Eventually, it is down to individual choice regarding what type of white wine to utilize for sangria. experiment with different wines and see what works best for you.