Game014-002GO8-001 is Top Dollar
Game014-002IZ2-A03 is Pinball
Game014-001EF8-D07 is Texas Hold em Heads up Poker
Top Dollar and Pinball are tall box games, so the top display will be sideways unless you have a tall box setup.
They are all family 14 games, so all should play on a G20 machine. As for license dongles, I have top dollar and pinball on my machine and didn't need license dongles for them. From my limited knowledge, I believe it depends on what Bios chips your machine has, as to whether or not you need licenses.
I don't have texas hold em, so not sure of the logistics on that game.