Re: “our Yosemite,”
Nope, I'm not mixing up anything. The Long Valley caldera, a couple miles South West of Yosemite, has a threat potential of "Very High". Yellowstone only has a "High" threat potential. Note that this is according to the USGS, not wiki.
https://volcanoes.usgs.gov/volcanoes/long_valley/
https://volcanoes.usgs.gov/volcanoes/yellowstone/