[request] Please make it possible to only select keyframes of currently selected channel in Graph while keeping the others visible

Talking about the Graph editor; it happens a lot we try to do a box selection on a group of keyframes of a particular object while we still need (and want) to see the other keyframes of other channels and objects in the same view (for instance to know what keyframes to select by timing).

AFAIK currently this isn't possible without turning off the other objects, but than we'd like to keep seeing those objects too, but just don't want to be able to select these keyframes at the time (temporarly).

This issue particularly happens a lot when using seperated channels for, for instance, scaling. Because a lot of values in the graph will be the same making keyframes being in the same range / exact location making it impossible to select the wanted keyframes in this mode.

It would be nice if we could hold some keystroke to be able to select keyframes of the currently selected object only.

Please see video below; it's impossible to select the keyframes of the current selected object/channel without clicking each and every keyframe one by one (which obviously is way too tedius and not even always possible) and without turning off the other channels/objects interfering with the keyframe locations of the graph.
This wouldn't be an issue if we could hold a keyframe to only select the keyframes of the current selected transform channel/element.

https://user-images.githubusercontent.com/69322733/184906111-3e2ea0f6-e051-4864-83d2-f1066a1c6f2a.mp4