All 3 of those games have very different rules and play style. I think you should make your decision based on how you like to play. Watch tutorials and videos to get an idea.

Here are some things that i think set them apart.
- GB and GOT are both Dwight rules that have some similar properties. Very exponential scoring, and not particularly balanced, but this can be fun, because you can really blow them up.
- GB can be frustrating, and fast. It is very polarising in opinion. There are many ways to play it, but you will probably end up playing the same approach every game. But of you like the theme and progressing, it is great, it is still the goto game in my house. Best art package of the bunch. Code still needs work and hopefully it will happen.
- GOT i have less time on. It has many ways to play. I think as a game to own. greyjoy adds a really nice added challenge. Once you master the modes, it is like playing on hard mode. Flowly and fun. I don't like that things like the ram can be a little finicky (i guess GB has that issue too). Rules are crazy complicated. Just the strategy around what 3 houses to bring into HOTK is crazy.
- TWD has that Borg bash layout that balances advanced play and beginner play so well. Beginners will hit the prison and have a great time. Rules are great strategy wise, building the stacks with BB, earning your multi kills. Best danger noise in pinball, and you will hear it every ball because you are forced into risky play. To do well, you need to know the rules.