Yeah, that's the gas turbine thing. The first-stage (which generates the majority of the power) isn't boiling water, but extracting energy directly from pressure from burning the gas in a jet-engine like fashion.
The coal/nuclear like natural gas is what is labelled as "Steam Turbine" in the chart in this article: https://www.eia.gov/todayinenergy/detail.php?id=61444
Looks like it's already a small minority.
