Triphase servo motors and amplifiers from different manufacturers: can they work together?
That would be also a challenge for most experienced engineer. The motors can differ in the feedback type: resolver, sin/cos, incremental, absolute, ...then the voltage/current rating, inductance, resistance.

You would need to be highly skilled to tune the current controller to match each motor. In practice, you attach the motor which is declared to be compatible with the servo drive and the pre-settings are already available by means of downloading/programming the servo drive.