Who gives a shit who owns Shitty. They are nobodies. Here today, gone tomorrow.
The real, traditional, biggest match, or "derby", in England is Manchester United vs Liverpool, although officially it is not a derby.
Of course there are many many other derbies, in London, in Sheffield, in the midlands, in the Northeast etc etc etc. But the biggest one is Man United Vs Liverpool, the two most successful clubs domestically and in Europe, always has been and always will be.