Could you get more into what you mean? I don't usually think of Dick and Bradbury as having similar styles. For more people who don't have similar styles but may be in the ballpark of what you mean, Asimov doesn't waste words. From a slightly different angle, Simak can be pretty plain-spoken. Early Heinlein was a different kind of plain-spoken. (Later Heinlein was mostly outspoken.
) Budrys has a sort of stoic vigor in much of his work. Harry Harrison is often lean, clearing away stuff that gets in the way of the comic timing in his humorous works. Bear is often workmanlike. Forward and many hard SF writers are efficient and direct. Terseness of any kind is a vanishing quality these days. John Barnes and maybe Steele are a couple of the - won't say recent - least old examples.
But then there are people like Bruce Sterling who may not be particularly terse but provide a lot of bang for the buck, regardless - very energetic style. And people like Sturgeon and Zelazny, as different as they are, can be very colorful and poetic but aren't wasteful, so have a sort of terseness.
Probably the most concise, clean, vigorous writer - I haven't read enough Hemingway to say it but I feel like it's "Hemingway-esque" - is Joe Haldeman.
Don't know if any of this is what you meant, though.
