"total lifetime emissions for nuclear vs. renewables"

I looked it up. IPCC (2014) says nuclear is at 12g CO2eq/kWh. Only wind is lower at 11g. UNECE (2020) has nuclear at 5.1g. No other source gets closer.

Your wikipedia link at the end saos lower austria has as 100% renewable electricity. First that's a bold claim by the premier of the region, considering they have 3 active natural gas plants there. It's power used, yes. It should be power produced. Austria is always proud to not own nuclear plants they sure use much of the nuclear power produced in czechia.