Hi, I don’t see options named as dynamic typography. Anyway, I don’t understand why this simple function doesn’t have to be integrated like all the others. Honestly, I see this as a theme bug, which you should fix, to make this SIMPLE FUNCTION easier to use.
We introduced Dynamic Typography so these additional styling options were made available.
If you go to Customizer > General do you see the option to enable the Dynamic Typography ? See here: