The existence of a list of compatible systems is great ( Computers compatible with Haiku (v2) ). However, it is somewhat cumbersome to consult as it as a suite of posts and not all posts are equal in quality. The other formats on GitHub and Google Docs help a bit but may become a pain to keep synchronized with each other.
A possibility would be to implement an approach similar to that used by Neverware for the systems “certified” for use with their CloudReady ChromeOS.
The full list of systems certified ( https://guide.neverware.com/supported-devices/ ) is just a list of links to summaries stored on Google Docs. For example, the summary for the HP Probook 450 G3 is ( https://docs.google.com/presentation/d/1_AwZ-rbQcZJSN_Ogb_NJDawCNar-ZhDs067VlHvWW9U/preview?slide=id.ga9588ab56_131 ).
I think that a two-level list would do nicely with first-level being manufacturers and second-level being models.
As for the one page summary, it could well be a HTML table with green symbols meaning OK, yellow symbols meaning Gothas/Notes, and red symbols meaning NotOK.