This is amazing, but they were different forks because we did not receive them on our wallets just like it happened with the last two forks (bitcoin cash and bitcoin gold) because they were instantly credited on our wallets. And Litecoin is just a copy of the code of bitcoin, that is not exactly a hard fork or just a fork of bitcoin, because it is a clone.
The same with the other alts, i have never heard about them, not even seeing them listed in somewhere.
I guess, majority of those forked coins, come from unpopular devs, bitcoin allow everyone to modify its source code and release by their own because it's open source. But the thing is, how to bring people to use their forked coins after succesfully deploying a forked coins.
That's why vast majority of all those forks becoming either useless or unpopular. The airdrop that happen from bitcoin cash and bitcoin gold, mainly because they want to make the circulating coins the same as bitcoin so they airdrops in 1:1 ratio. Also, those two are popular forked coins.