In Lightroom Classic CC version 7.3 & 7.3.1 the profiles have been moved from the Calibration panel (Develop module) next to the Basic panel. See the screen capture.
So I would suggest the following while you have a sample image raw file selected first in the Calibration panel select the Process version 2012 there, then use the Profile browser to select a profile from the Camera matching profiles, make any other edits you may wish to be applied when you import raw files and either update the "Default Develop" settings or create a preset to be applied on import.
In this way you can continue to use the Process Version 2012 instead of the Current process version for LR Classic. Lots more options available from Adobe created profiles.
See the screen capture.
Process: 2012 (Current)Profile: Camera Neutral ... And now that I have upgraded to Lightroom CC Classic, I can only find the setting Adobe Neutral, and it does NOT give me the same effect.
1. Camera Neutral is still available in LR 7. Open the Profile Browser and it will appear under the Camera Matching group:
2. Unless you have a very specific reason for staying with Process Version 2012 (Version 3), you should start using the most recent Version 4 (the default). Camera Neutral is available with both process versions.
In addition to what John has indicated, the Camera Neutral profile can be designated as your default profile if you want to update your default settings for your camera. Then that profile will be applied whenever you import new images.