Examples of websites using
GT America Mono
(GT America Mono is a monospace font designed by Noël Leu, Seb McLauchlan and released by Grilli Type in 2016. The font has a range of styles available, offering versatility in design)
with
Helvetica Neue
(Helvetica Neue is a popular Sans Serif font designed by Max Miedinger and published through Linotype in 1961. The font family consists of multiple styles with different weights and matching italics)