Tracking your product-market fit?

I’m currently working on the SaaS tool. Think of it as a product-market fit “checker”.

I did in-depth research and found quite a few tweets and articles about the product-market fit. Then I combined the data into a simple dashboard with 10 metrics: NPS, LTV/CAC, Activation, Conversion, D7, and D30 Retention, Churn, DAU/MAU, and Growth Rate.

I'm currently validating if this tool is helpful for early-stage founders in PMF tracking. And looking for some early opinions.

Does this comparative approach feasible for PMF metrics at all?

What are the metrics that really matter for product-market fit? What benchmarks do you use if any? Are there any other PMF-related metrics that I missed?