Did any of the Motown acts, after the summer of 1967, continue to consistently maintain or even surpass their Billboard chart placements with about the same consistency they did prior to that time?

Off hand, I recall groups such as the Four Tops and the Supremes still had some hits; however, not to the level as they did in 1964-67. Are there any Temptation fans here who might have an assessment as to how this applied to that group? Martha & the Vandellas? Smokey & the Miracles? Marvin Gaye?

I ask this because I am reading on another forum how the departure of a member of a group led the group to no longer have the success that it did which I personally do not buy as a reason. I am looking for an overall assessment...were chart placements just as consistent with hit records as the summer of 1967? THANKS


Thanks