One thing I don't see mentioned yet is SpaceX are using precession to separate their launches into separate orbits. They launch 60 sats (numbers slightly simplified) to around 260 km (or whatever it is now), start raising the altitude of 20 of them, whilst keeping the other 40 at insertion altitude. Doing this for a month separates the two groups by a couple of degrees, then they repeat it with the next 20. This way they end up with 3 groups in separated orbits without having to actively do the separation with rocket fuel (and a regular shell has 72 such separate planes/orbits).

The reason this works is that the effect of nodal precession depends on altitude. Sats at different altitudes drift slower/faster.

Precession alone is enough to ensure sats won't visit the same "points" as you have imagined, unless perfectly synced (and that's then related to SSO orbits, as I've mentioned in another comment).