Well, Kubrick and Clarke developed 2001 together, based pretty loosely on the Clarke short story The Sentinel, so I don't think it is applicable.
The Sentinel provided the idea for the monolith on the moon being an alien 'intelligent life detector' (i.e. to detect when humans had achieved spaceflight). But it has no man-apes, no Jupiter mission, no HAL, no star-gate sequence. The bulk of the plot came from the Clarke-Kubrick collaboration, which had numerous other inputs [0]
[0] https://en.wikipedia.org/wiki/2001:_A_Space_Odyssey#Writing
> Clarke offered Kubrick six of his short stories, and by May 1964, Kubrick had chosen "The Sentinel" as the source material for the film