Really like the new icons, but I don’t see how you can use them for Reminder Lists. Is that something that’s just not possible?
Hi @michaelborland, thanks for the feedback.
You can edit 'Reminders List' and change the icon. This only works inside GoodTask and does not sync with default Reminders app.
Also Mac version will not show it until Big Sur version.
Thanks!
@GoodTask understood, but I’m looking for a way for a list icon in the Home Screen widget to use one of these
Seems the only icons available for a reminder list is one of these
Icons used in lists and 'Favorites : Add task' type are different. 
Icons used in lists are more limited to make it fit on identical circle shape.
Thanks!