Custom Font Size in the Gutenberg Editor

[SchneiderSam]

I use this tool https://type-scale.com/ for all my web projects to ensure consistent font size.

I would appreciate it if you could predefine these values in the Customizer (or in the future in FSE?) and then select them directly each time:

Even in Generateblocks i can choose the Font Size:

So one place where I could define these dimensions would be very interesting.

Note: I noticed in the screenshot that Gutenberg Core (13,20,36,42) and GB (13,17,25,35) have different font sizes. What is the reason for that? Is there no way to unify this?