I have a question regarding free will in Islam

Has it ever reckoned upon the Ahle Sunnah as to realistically how many people can be spiritually good or bad (not just believing or disbelieving). Since Allah has created the world to test, was there a chance that all humans, according to their free will, might have done so bad that Allah would have put all of them in Hell, aside from the Prophets and their companions. I'm mainly talking about the last Ummah because that is what is emperical directly. So is it mentioned that Allah would have created a balance by creating people with forced good intentions or rather all humans could have ended up as sinners?