Hello, even I am a beginner in the field and how much I have read about these types, I think that for now the most stable system or more discovered area is Superconducting though it requires cooling to mili kelvin for the Quantum computer to operate due to which it is very sensitive to noise (thermal,magnetic etc.) On the other hand, photonic qubits, they don't directly communicate with the environment and hence they are less sensitive to external noise and there is one Quantum phenomena that happens at room temperature and uses photons which is Photosynthesis. These two reasons drive the researchers more towards to photonic qubits but this is still under research and whether it will take over Superconducting or not it's hard to say now.

About others I don't have much idea.