Macintosh was always Apple. Apricot may have been trying to ride on the coattails of Apple’s popularity (I remember the computers but I’m too lazy to look it up).
Olivetti, from Italy, was pretty famous in Europe as a typewriter manufacturer. So it wasn't much of a surprise my father's first PC (and the first PC compatible I could use) was Olivetti PCS 386SX, circa 1992.
Turns out Olivetti is surprisingly important in computer history too. Olivetti made Programma 101, which was the first programmable desk computer/calculator, way back in 1965. If NASA bought a bunch of these, I guess it was serious shit.