How the ranking works
Would pick you. How likely the mentor is to choose you, judged only against what they ask for in their profile. Miss a hard requirement and this drops hard. The ranking is mostly this.
Fit. How well your skills match the work itself. High fit with a low pick score means you could do it but haven't shown it yet.
Your top six get a deep dive: what they want, what you already have, your gaps and how to fix them, and a demo you could build in under five days. Then it looks for one demo that covers as many of them as possible.
Co-mentors who share a project are grouped, so you'll see 33 projects for 42 mentors. You still apply to each mentor by name.