But I heard that Binance asks for a BTC10 or more listing fee from the developers or the founders of the project. If this is true, was there a time that Binance listed a cryptocurrency from the initiative of the owners of the exchange itself?
I believe this still happens from time to time. If they know the coin is going to give them money (in fees), has a strong community and it's not a confirmed shitcoin, they are probably going to support it.
E.g: I doubt Roger Ver had to pay anything for them to accept Bitcoin Cash. It was just an obvious choice.
What about Bytecoin? Do you think they are not a shitcoin and has a strong community? You dont have to answer that lol.
Bitcoin Cash is a hard fork of Bitcoin. Anyone who owned BTC before the hard fork automatically has BCH. The exchanges had no choice and had to give the users who stored BTC in their exchange wallets their share of BCH.