System characterization given pole-zero mapping
I will not do the homework for you, but I'll make a few comments on your observations to clear up some of your misconceptions. Concerning the first plot (top left I suppose) you wrote:


"the system is stable since we have a region of convergence containing the unit circle"


This would be correct if the system were non-causal (i.e., with a two-sided impulse response), but since - according to the first sentence in the question - the system is causal, it can't be stable if it has poles outside the unit circle.


" ... and FIR because it is stable"


This is wrong. What you're saying is that any stable system is FIR, which is definitely not the case. Of course there are stable IIR filters. Here you'll have to do some more studying to learn what stability means and to understand that it is not necessary (only sufficient) for a stable system to be FIR.


"... and minimum phase because we have a pair of complex conjugate pairs"


That's also wrong. The fact that a system has complex conjugate pairs of poles and zeros has nothing to do with the minimum-phase property. You need to read up on minimum-phase systems. They can be inverted by a causal and stable system. What does this tell you about its zeros?
Any system with a real-valued impulse response has either real-valued or complex conjugate pairs of poles and zeros. That's because $H(z)$ is a real-valued function of a complex argument.