The bone-wielding ape who represents the evolution of the species is called Moonwatcher in all versions of the screenplay.
The moon Monolith is indeed called TMA-1 (Tycho Magnetic Anomaly, after the Tycho crater) in the original screenplay, as it appears in Clarke's book. The Earth and Jupiter monoliths are named TMA-0 and TMA-2 respectively, despite not being in Tycho. [Wiki]
There was voice-over narration planned throughout most of the second and third acts of the film.
The cost of Floyd's flight to the moon is $10,000, first class.
The script describes Floyd as "reading from [an] electronic newspad", described in Kubrick's scrawled screenplay notes as having "facsimile selections of NY Times, Time magazine, Playboy, scientific periodicals; an electronic library".
Ominously, the mission to Jupiter was officially dubbed MAXAR, as in Maximum Acceptable Risk.
Depending on which version of the script you read, the HAL-9000 was originally programmed by either Mr. Fried or Mr. Arkany.
See also: The Other HAL