This. All good manufacturers (Apple, Dell, Lenovo) allow you to spec US keyboards when you order. macOS is good because of it's composing. You can compose umla

This. All good manufacturers (Apple, Dell, Lenovo) allow you to spec US keyboards when you order. macOS is good because of it's composing. You can compose umlauts by pressing option+u and then the "base" vowel, sz/ß is option+s. Same with accents, that's option+e/option+i and more. The Spanish ñ one is option+n, n.