Once again its not the same thing. The network comming to consensus is not the same as transaction speeds, however it can effect them.
Most the coins you have shown with fast transaction times are NOT pure PoS coins. And the ones that are, have a huge stake required that helps prevent millions of nodes.
You have not linked a system you have described earlier where 1 coin = 1 stake in a PURE PoS system with fast transaction times. Maybe you dont realize you dont like a PURE PoS system, and instead liked a DPoS system.