Which faction of Serie A does Naples belong to?

Inter Milan, Juventus and AC are all northern teams, also known as the northern top three. Most Serie A teams are in northern Italy, such as Florence, Siena, Genoa and Sampdoria, which unfortunately relegated. The main strong teams in the south are Naples and Rome, and other southern teams include Lecce, Reggina, Bari and so on.

So Naples is one of the representatives of the southern Italian faction teams ~ ~ ~