In Blender, we have the convention of putting all the overlays inside the Overlays popover.
Mode-specific overlays are also placed here, below the main overlays.
However, inside the paint modes, we don't currently use this. Instead, we have a panel inside the already crowded tool settings area:
Instead, we should do what we do in Edit Mode and everywhere else: Put the overlays inside the Overlays popover:

