Examples of websites using
MFred
(MFred is a sans-serif font designed by Matt Willey, Dmitry Rastvortsev, and Henrik Kubeland and released by Matt Willey in 2014. The font offers a range of weights and styles for various design needs)
with
Matter
(Matter is a sans-serif font designed by Martin Vácha and released by Displaay Type Foundry in 2017. The font family consists of multiple styles with varying weights and matching italics)