Davis redshirted so she has the option to come back. Singleton and Igbokwe are out of eligibility, but I don't think they are as important to Ole Miss' success as the 4 guards are. Plus, they do have some size on the bench that should continue to develop.Ole Miss loses at least two starters in Marquesha Davis (their leading scorer) and Rita Igbokwe (second in rebounding, team leader in FG% and blocks). They also lose Singleton, who's started 11 games. I'm assuming KK Deans is redshirting or she's otherwise out of eligibility. All of their other starters are seniors who could use their COVID year (Scott, Todd-Williams, Collins) but I haven't read anything if they plan to come back or not.
You might be right about Alabama. They have three senior starters who can all use their COVID year (Nye, McQueen, Barker), but I haven't read anything about them either.
For all of the super seniors that play major minutes and are probably looking to go pro, I'll generally assume that they are coming back unless they are a high draft pick (and as we saw with Rickea, she came back anyway).