Globalstar flies highest, with orbits at ~1400 km. Starlink is at ~340-550 km. Per satellite, a higher altitude sees a larger portion and provides greater angular visibility of the Earth's surface at any one time. Globalstar is suited for low-power devices, emergency sat messaging, and IoT, not broadband speed. One reason they made a good fit with the iPhone. Also the valuable spectrum.
Tangent: SRE was very color-heavy and that led to some long ANSI sequences. From the recently decompiled source [1] you can see that I tried to pick shorter ANSI sequences when I could. In particular, going from color 0x0* to 0x1* we could save 1 byte, and going back to the default white on black we could save between 1 and 4 bytes. But if you're bandwidth limited there's also an option to turn off color entirely.