Excellent thought process.
I use a version of PSG.
Agree this applies more to smaller companies and specially those who are reinvesting substantially rather than generating free cash flow.
I also add gross margin % as part of the mix. Because for same growth rate and same P/S today, a company with higher gross margin has prospect of higher cash flow when they decide to slow / stop reinvesting.
This would change your lists’ order substantially.
Other factors to add are recurring revenue vs one time (infrastructure like) revenue and they need a different valuation treatment. It’s hard to put these into numbers so I just catagorize them and but default prioritize recurring revenue businesses.