Autoruns does not list Power Automate which starts around login. I suppose this uses one of the 'Modern UI' startup hooks. So it's more like an example of something that's not in the list. It would be nice if it was listed.
This app from the Windows (11) Store: https://www.microsoft.com/store/productId/9NFTCH6J7FHV
This is started around login: C:\Program Files\WindowsApps\Microsoft.PowerAutomateDesktop_10.0.2065.0_x64__8wekyb3d8bbwe\PAD.Console.Host.exe started by sihost.exe
It also seems to hook into Microsoft Edge -> cmd.exe -> "C:\Program Files\WindowsApps\Microsoft.PowerAutomateDesktop_10.0.2065.0_x64__8wekyb3d8bbwe\PAD.BrowserNativeMessageHost.exe" chrome-extension://njjljiblognghfjfpcdpdbpbfcmhgafg/ --parent-window=0