Although many people's favorite is Inter Milan, Atalanta and Napoli are good teams with very good squads and can win as they wish. They can have a good winning streak and be at the top. It was better that there was more competition this season. There is currently a three point difference between each team, Inter Milan is at the top with Napoli behind them.
The coming weeks will be quite competitive. The performances of the teams will be very important in these weeks. The team that makes mistakes will fall behind immediately.
At least for now Napoli are the strongest competitors for Inter Milan and if Inter Milan are not careful then they will lose their place. Based on the match schedule I see Napoli in an advantageous position because they only have one strong opponent, yeah it's the match against AC Milan at the end of this month and if Napoli can win then they are a little safer. This is different from Inter Milan, who still have tough and important matches one of them is the Champions League which can drain the player's stamina.