I have just taken two shots on my Nikon D850, in very difficult mixed lighting. The first with ADL Extra high, the second with no ADL…
All I have done is open them in PhotoLab 5 with the No Corrections preset and export them to JPEG.
ADL might have affected the exposure but not noticeably - the first came out at 1/40 sec and the second at 1/25 sec.
Both files look almost identical and, apart from horrendous colour balance issues due to the room being clad in pine, are equally easy to apply any necessary corrections, with no blocking of shadows or blowing of highlights.
Oh, and the exposure reading was a spot measure on the post between the door and the window.
My conclusion is that ADL really doesn’t make any worthwhile difference to the RAW file in a way that affects how PhotoLab treats it. And, as @Required says, Smart Lighting is perfectly capable of “equalising” extreme tonal range far better than ADL can.
The key is to use No Corrections as your default preset - even the “Standard” DxO preset can do significant “damage” to an already well balanced image.
There is absolutely no benefit in ever shooting JPEG files. The RAW file already contains a fill size JPEG, which is used for preview purposes. It has been pre-processed in the camera and far more limited in the dynamic range and subtleties of contrast than the RAW file.