What are some differences between the monotheistic religions?

I can only answer some.

Christianity: the prophet was Jesus Christ, the holy book is the "holy bible", It has different holy buildings it's referred to as "church", or "cathedral" or "chapel"  but there's Methodist, Baptist,etc. some important people was Isaiah, Moses, Luke, Jesus, Gabriel, etc.

Judaism: The holy book is called a Torah, one of the prophets was Moses (that's all i know about that religion)

Islam: Muhammad was the prophet of Islam chosen by Gabriel the angel, the holy book is called the "Quran", one of the holy buildings i know of is the Kaaba