Examples of websites using
IBM Plex Sans
(IBM Plex Sans is a Sans Serif font designed by Mike Abbink of Bold Monday. The font family consists of multiple styles and variations, including regular and italics, and is available in a range of weights)
with
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)