I'll say 7. If not, 10. This comes down to Thanos; every other round is fodder. All the main threats besides Big T are the hax people, and they are glass cannons that can't survive the shockwave from Superman clashing with someone else.
Ignoring the universe shaking punch, Goku was able to trade blows with Beerus, who can one shot planets with a finger tap. Goku also went at it with FF Frieza in Base in RoF. First Form Frieza stomped SSJ Gohan, who was superior to Final Form Frieza on Namek who was at least large planet level.
Frieza erases them all with a single ki blast. The strongest people here (Naruto, Sasuke, Saitama) are all life wipers/moon busters at best (unless you use the anime) while Frieza is far above planet busting.