"Word wants a subscription. Pages is a lot of app. TextEdit tops out at bold and italic."

No it doesn't? format>font has bold, italic, underline, outline, super/subscript, and more?

It used to have strikethru too, annoyingly now you have to open the fonts window and access it through a dropdown in there instead of a single hotkey. Notes still has a strikethru menu item but the ⌘k hotkey got stolen for "make hyperlink".