I often scan the Dynamic Range for my records and store them in the edit history.
There is an online database for this, which is called the Dynamic Range Database hosted at http://dr.loudness-war.info
For instance my ZIGGY STARDUST’s 40th anniversary edition’s own scanned DR11 https://musicbrainz.org/edit/18005006#note-18005006-3 does match their http://dr.loudness-war.info/album/view/21762
I would gladly feed their DB additionally to or instead of our edit history if I could link them at release level.
We could optionally display the fetched DR score on the release page, release-group page, etc.