TNB,Time new bank,Is the platform currency of MiaoA application in TNB ecosystem
BNB, is the platform currency of binance
HT,is the platform currency of huobi
But TNB looks a crap coin for me and i would like to call that as a dead coin. BNB and HT can be considered as the platform shares. But there was a little different between HT and BNB. for me HT just like a huobi shares or utility token that can be used on its exchange site (Huobipro) because it's still using ethereum as the main platform to create HT token but binance used its own token that created on its own blockchain ecosystem.