Data centers are pretty regional, so the loads tend to follow working hours. That and to be honest once the AI companies start actually charging for what was free or below cost, the loads will decrease.
Renewables, excluding geo-thermal (base load) can overlap and be somewhat supported by batteries. For instance this 3.5 GW wind project that's quietly coming online -
https://www.eenews.net/articles/largest-us-renewable-project-begins-generating-electricity/