maple classic™ 
abnt2 does á é without doing ś ḿ exactly the way i want it to but abnt2 is a different layout than us and this keyboard is us so i won't be able to type some punctuation
@InspectorCaracal i just found "alternative international" but it works exactly the same way
áéíóú
śḿ and '+t doesn't put anything unless i do '+space+t
@squirrel Well that page was bullshit then.
I'm finding someone referencing US International (AltGr with dead keys) which apparently requires you to hold the right alt key when you do ' in order for it to combine, but I don't know if that's better or worse than having to hit space after ' in order to use it as a character. 🤔
I'm also not seeing anyone mention the ability to customize which combinations work, which is a significant oversight imo.