During Nomad epilogue or Mr Blue epilogue you can check your mercenary status in Night City (it's 100%): it says something like you overshadowed Morgan Blackhand - that's all what you need to know.
So some people Rick Sanchez their V into a dimension of baby safe padded world with nerf guns and adults letting you win. I have also done that on some games that I am only there for the story. But that is still just one timeline that you loaded up.
You just were more selective than going with random "sliders" type method.
During Nomad epilogue or Mr Blue epilogue you can check your mercenary status in Night City (it's 100%): it says something like you overshadowed Morgan Blackhand - that's all what you need to know.