Examples of websites using
GT Super
(GT Super is a sans-serif font designed by Noël Leu and published through Grilli Type. The family includes a wide range of styles, with multiple weights and matching italics available)
with
GT Zirkon
(GT Zirkon is a geometric sans-serif font released by Grilli Type. The family consists of 18 styles, including regular, book, bold, condensed, and extended widths, each with matching italics)