Tandy’s Color Comouter 1/2/3 also has a semigraphics characters set. It’s similar to TRS-80 but only 2×2 instead of 2×3. CoCo 1 & 2 also had some interesting semigraphics modes courtesy of the MC6847 VDG chips that could display half of one character on the top and half of another on the bottom! The CoCo 3, reimplementing much but not all of the 6847 features in an ASIC, lost those features.

Also, something needs to be clarified. While the Apple character set is iconic, Woz did not design it. He selected an off-the-shelf character generator ROM for the Apple II, the Signetics 2513. Don Lancaster did as well for his TV Typewriter design from 1973. Woz had built something similar with the same chip, which became the basis for the Apple I video circuit. Apple adapted and extended the character set for the custom video ROMs used in their later computers, but they all feature that same 64-character Signetics 2513 design as their base.