MPLUS 1c with Neue Haas Grotesk in action on 2ndstreetusa.com

Under the hood

.header-1 { font-family: haas-grot; font-size: 25px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 30px; text-transform: none; color: #0E0E0E; }
.content-1 { font-family: mplus-1c; font-size: 16px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 24px; text-transform: none; color: #0E0E0E; }
.content-2 { font-family: haas-grot; font-size: 16px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 24px; text-transform: none; color: #0E0E0E; }

MPLUS 1c is available from Adobe Fonts.