They share the same profiles. They should also have the same settings in the variants, but this is not automatically shared for some reason.
Contributes to issue CURA-3650.
These are now upgraded to version 3, meaning that they will have to increase their version numbers and remove any start_layers_at_same_position settings they define. None of these profiles define any start_layers_at_same_position so it's just the version number then.
Contributes to issue CURA-3479.