Masternode Tracker (MNT) started in 2018 and finished in 2019, with a total supply of unknown coins. The team/founder is hidden, The main reason this coin was listed is scaming.

Developers forked wallet from a wallet with known security flaws. Someone hacked the wallet and generated Millions of extra coins, then dumped them onto exchanges. The exchanges failed to prevent the dump (a deposit worth Millions of dollars should ring alarm bells) The social media accounts and website have all been abandoned.