Op-Amp Datasheet: Open Loop Gain vs Phase
For the main part of the open loop response a typical op-amp acts like an integrator and therefore shifts the phase angle by about 90 degrees. The curve that looks most like 90 degrees is the phase response. Here's the response for an OPA192: -



Taken from this blog. And below is a generic op-amp's bode plot: -



Taken from here and below an op77: -