Work in progress. Orlov Diagrams™ for Detailed Scans of the more common objects after an initial scan.
Conspicuously absent: Class V gas giants, Helium gas giants, Neutron Stars, Black Holes, Ammonia Worlds, T Tauris, Herbig Ae/Be, Wolf-Rayet, "O" stars, super/bright/hyper/whatevergiants. Whatever else is out there.

And a lot of the ones on there need more points. It's just hard to find some of these things either close to inhabited space.
There are some points lying off the nice curves which may be down to bugs, error or something else.
Note that all main sequence (well, I haven't logged "O" main sequence stars yet), ordinary giant and brown dwarf stars return more or less the same amount: 1200 credits plus a little more based on their mass.
The highest value Water World was a candidate for terraforming - but so was one of the lower value ones.
Class II gas giants are high value; they're also rare. Life-bearing gas giants are low value.
Rocky and icy planets are rubbish. Metal rich worlds are good; even a tiny mass metal rich world is better than a massive high metal content world.