Automating Sound Consistency in Recordings with Different Microphones and Studios

I find myself in a situation where I have a collection of recordings made by various voice actors, and each of them used different microphones and studios. This has resulted in a variety of sound qualities and vocal tones that vary from one recording to another. The question I have is as follows: Are there techniques, programs, or plugins that allow me to standardize the sound of these recordings in a simple and automated way?

The main reason behind this question is that I have a significant number of recordings to process, and individually adjusting each one would be a very laborious and time-consuming process. Therefore, I am looking for solutions that will enable me to achieve sonic consistency without the need for meticulous manual adjustments for each audio file.

I appreciate any advice or recommendations you can offer to help me address this situation and make all these recordings sound uniform and of high quality. Thank you in advance!