Examples of websites using
IBM Plex Serif
(IBM Plex Serif is a serif font designed by Mike Abbink of Bold Monday. The font family consists of multiple styles, including regular, bold, italic, and bold italic, offering a range of options for designers and typographers)
with
Inter
(Inter is a sans-serif font designed by Rasmus Andersson in 2016. It is a versatile font family that consists of 18 styles, including regular and italic variations, with a focus on legibility and readability)