The Final Fantasy XIV Endwalker Official Benchmark uses actual maps and playable characters to assign a score to your PC and rate its performance, including scene loading times.
The benchmark gives an overall load time as well as loading times by scene.
Klevv's 2TB CRAS C925G SSD makes a pretty decent job of the Final Fantasy XIV Endwalker Official Benchmark. It sits in the top ten of every scene load, apart from Scene 1, where it sits in the bottom half of the result chart.