Lightroom CC automatically adds "Adobe Default" preset to imported RAW photos

Correction:

With the last release of LR (June 2020) there is a "Camera Preset" develop preset, which is a camera matching color profile; and in some cases it will pick up some basic/detail adjustments as well (e.g. saturation/sharpening). With my Nikon's, all it does is change the color profile to "Camera Neutral" and all other settings to Adobe defaults.

An option that is probably better is to edit an image with basic/generic edits; setting the color profile, saturation, sharpening, noise reduction, etc, to your desired/typical starting point for most images. Then go to the develop menu > new preset > save with unique name. Now you can apply that profile (or any other) by default by setting it in the preset preferences; either by camera model as I have done (with override selected), or by changing the Master preset.

As shown in the image you can also make an adaptive ISO preset by editing a high ISO image, and a low ISO image; and then selecting them both before selecting the new preset menu option. I use an Adaptive ISO preset, but I have switched one to the Camera Settings preset for the screen capture.

https://blog.thomasfitzgeraldphotography.com/blog/2020/6/creating-iso-adaptive-presets-in-lightroom-93