Complex sentence: Nearly all the segmental scripts ("alphabets", but see below for more precise terminology) used around the globe were apparently derived from the Proto-Sinaitic alphabet with the notable exceptions of Ol Chiki, Zhuyin and the now obsolete Meroitic script, among others.
Split into simpler sentences: Nearly all the segmental scripts ("alphabets", but see below for more precise terminology) used around the globe were apparently derived from the Proto-Sinaitic alphabet. Notable exceptions, that were not derived from Proto-Sinaitic, include Ol Chiki, Zhuyin and the now obsolete Meroitic script, among others.