Nothing easy, that I am aware of.
Maybe an app out there to help with that.
MAYBE can jimmy up a Safari URL that is maybe Javascript with simple execution of "tel:555-555-5555", at which point, can maybe put on home screen via Share Sheet.
Kinda in the desired direction, a Shortcut. Three step shortcut, example attached. Can then put that on the home screen. Downside, will drop user back into Shortcuts app when done vs home screen.
Favorites on the widget/Spotlight screen (aka swipe right from home)?