Adding global class to global styles

From old feedback: Adding global class to global styles | Cwicly

I’m not sure why all the settings are not available in the “Global Styles”, but it’s not tragic either. But then it would be very useful to have the freedom to store a globally defined class there.
Actual example: I want to apply a gradient with “background-clip: text” to all my h2 classes without always having to explicitly assign a class. At the same time I would like to have a general tool class for “background-clip: text” as well.