Hi,
Here is what I got:
Finding available software
Software Update found the following full installers:
* Title: macOS Monterey, Version: 12.6, Size: 12394539947K, Build: 21G115
* Title: macOS Monterey, Version: 12.5.1, Size: 12405687415K, Build: 21G83
* Title: macOS Monterey, Version: 12.5.1, Size: 12405687415K, Build: 21G83
* Title: macOS Monterey, Version: 12.5, Size: 12403197683K, Build: 21G72
* Title: macOS Monterey, Version: 12.4, Size: 12103360613K, Build: 21F79
* Title: macOS Big Sur, Version: 11.7, Size: 12409605694K, Build: 20G817
* Title: macOS Big Sur, Version: 11.6.8, Size: 12409703750K, Build: 20G730
* Title: macOS Big Sur, Version: 11.6.7, Size: 12412747215K, Build: 20G630
* Title: macOS Big Sur, Version: 11.6.6, Size: 12412173576K, Build: 20G624
* Title: macOS Big Sur, Version: 11.6.5, Size: 12412317772K, Build: 20G527
* Title: macOS Big Sur, Version: 11.6.4, Size: 12439328867K, Build: 20G417
* Title: macOS Big Sur, Version: 11.6.3, Size: 12435122667K, Build: 20G415
* Title: macOS Big Sur, Version: 11.6.2, Size: 12433351292K, Build: 20G314
* Title: macOS Big Sur, Version: 11.6.1, Size: 12428472512K, Build: 20G224
* Title: macOS Big Sur, Version: 11.5.2, Size: 12440916552K, Build: 20G95
* Title: macOS Catalina, Version: 10.15.7, Size: 8248985973K, Build: 19H15
* Title: macOS Catalina, Version: 10.15.7, Size: 8248854894K, Build: 19H2
* Title: macOS Catalina, Version: 10.15.6, Size: 8248781171K, Build: 19G2021
* Title: macOS Mojave, Version: 10.14.6, Size: 6038419486K, Build: 18G103
* Title: macOS High Sierra, Version: 10.13.6, Size: 5221689433K, Build: 17G66