Based on data taken from Billboard Magazine's R&B/Soul Singles charts. Along with the artists themselves, I've listed two songs apiece that I feel represent their recorded '70s output.
HIGHER GROUND - 70ts Soul, Funk & Jazz Fusion, Lowrider Soul, Rare Grooves and more - Your Guide To The Best CD Reissues & Remasters (Sounds Good Music Book) eBook : Barry
Funk Songs 70s, The sound of Japan's City Pop scene preceded the even sunnier sounds of J-Pop, with a sound that drew from so many sources.
SOUL FUNK DISCO LP VINYL COLLECTION JOB LOT Albums Records 70s
Funk Power!!! James Brown Album & Single Guide 1965-1975 - Rate Your Music
Essential Hip-Hop Releases From The 1980s: Slick Rick, RUN-D.M.C., De La Soul & More
The Top 100 Soul, Funk & Disco Acts of the 1970s - Rate Your Music
Betty Wright, Soul Singer Who Mentored a New Generation, Dies at
PAN M 360 – TOP 100 ALBUMS OF THE YEAR – PAN M 360
Nile Rodgers - Wikipedia
The Definitive ‘70s Pop Music Countdown Finally--the complete and systematic ranking of every song and every act that peaked on Cash Box® magazine’s
Ranking the '70s: A Complete Compilaton of the Chart Songs and Acts from Pop's Eclectic Decade
The 100 greatest songs of the 1970s, ranked - Smooth
Various : Soul Music Lovers Only – Masterpieces Of 70s Disco