Hebrew grew out of their time in bondage in Egypt, the hieroglyphic system was adapted from or was analogous to hieratic writing in use for everyday communication. Oddly enough, cuneiform wound up getting used to write quite a number of other languages and was the preferred system for diplomatic correspondence by the 9th c BC. The archive at el-Amarna in Egypt consisted of cuneiform tablets, copies of incoming and outgoing diplomatic letters.
I agree. You seem to be well read in the subject. I have study ancient script as well.