Add property to all clips in an animation controller?

Is there an easy way to add a property to all clips in an animation controller? I've got a handful of properties at various levels of the hierarchy, that I want to animate across ~16 clips, and it's a little tedious to pick out the individual properties for each of them. I know I can get them with a little less clicking by using recording mode, but a) I still have to do that once for each clip and b) it's easy to forgot one of the properties. If I could just prepopulate all clips with the same properties, that would save a lot of headaches.

 

You could do a small script that can generate all the property's you need
https://docs.unity3d.com/ScriptReference/AnimationClip.SetCurve.html

 

I just realized that while in Anim preview, you can right click a component and add keys from there. Works with multiple selection. Using 2020.3.9f1

 

This is what the official Unity tutorial suggests as well. Thanks for helping me refind the right answer after I forgot.