Early Rock N' Roll songs was initially listed in the Rhythm and Blues (also called "Blues and Rhythm") charts until 1958. Check Galen Gart's monumental 11 volume series if you require documentation. 1959 was the year when Rock N' Roll and R&B split off into different musical directions. R&B was already morphing into Soul, due to the influence of Berry Gordy, Jr.'s Tamla/Motown labels. Groups like Smokey Robinson & The Miracles and The Falcons were changing the style that R&B would become at this time. What is called R&B today bears absolutely no similarity to what was produced 1949-58. R N' R was becoming more "pop-like" with the inclusion of strings and full orchestration, evident when one listens to The Skyliners, The Passions and other late 1950s - early 1960s groups. Also, in my opinion, the quality of the vocal harmony was decreasing. There was a lot of off-key harmonization discernible in records during this later period.
Bebop wasn't an influence on R&B or R N'R simply because both of those genres were in the tradition of swing, which made the music danceable, something Bebop wasn't. Bebop had its beginnings in the early 1940s and incorporated improvisation as its hallmark. Because of this, the music sounded disjointed, using different progressions (Swing used a One-Three, Bebop used a Two-Four beat) not suited for dancing.
What the Wikipedia article doesn't say about Doo Wop is that probably the first recording to use this hook was "The Stars Are Out Tonight" by The Teardrops (white group from Brooklyn), recorded in 1954 and released on Josie 45-766. Unlike The Clovers' "Good Lovin" or Carlysle Dundee & The Dundees' "Never", one can clearly hear the "doo-wop-wah-doo-da-doo-day" by the backing vocals.
Just my two cents (not adjusted for inflation or other economic variables).