Although "Funk" is not in the title, I thought it was this James Brown song from 1964 that was the first funk song, with the emphasis on the "one", instead of the 2 and 4...
Btw I totally love Dyke & The Blazers, and had all their releases on vinyl too, and then on CD when I sold my vinyl.
Nonetheless, Dyke & The Blazers kept the emphasis on the "backbeat" 2 & 4 in "Funky Broadway", which is not technically funk, as great, raw, and "funky" their sound was.