Very helpful @mathew77
But all or most of these rely on the databse by blawar you mentioned in your last link.
So to manually retrieve update infos about a game (and in case some of the other mentioned tools won't work anymore), just use blawar's repository: github*com /blawar/titledb
And here...
I ordered a "New2040plus" model for the V1/V2 Switch and measured the following - so I can confirm your values. I didn't have time to install it yet. Also because it came pre-flashed with 2.7.4 (according to seller) and I can't get it into flash mode by holding the BOOT button and then...