What do you call this? _val = Mathf.Lerp(_val, _target, Time.deltaTime);

I call it a “poor man’s low-pass filter” and I use it everywhere, all the time.

I usually multiply the third term by a constant I call “Snappiness”

result = Mathf.Lerp( result, target, Snappiness * Time.deltaTime);

which lets you adjust how snappy it adjusts.

Lerping to smooth things out:

In the case of input smoothing (implementing your own input filtering):