Bob...
Firstly the PFA is no more and now the LAA
Website
I don't know of a comparable spreadsheet, but what's wrong with the one you link to as a starter? When you find types that look interesting, check whether they are LAA types here.
For details on a type look at the TADS via
Link, or just scroll through this list (and the Vintage aircraft one).
Questions I'd add to you list would be:
Aerobatic? Taildragger or Nosewheel? Short field capable? Decent even "high" performance e.g. RV, or more sedate / cheaper e.g. Rotax types?
Your <<for a 2/4 seater capable of carrying two adults>> is rather broad. There are numerous 2 seaters fitting the bill, but 4 seaters are few in number, and a different league in terms of costs etc.
Any more questions ask away here, and hopefully will get answered. I'm biased and would tend to steer people towards the RV family
But they are at the higher performance / pricey end of LAA arena.
NoD