YAhoo
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Unknown to most is that most scholars believe Yahu, pronounced Yahoo, is apart of all the variations and deemed to be the root. However, I question that for various reasons, though there is evidence and even an alleged incorporation in the Messiah's name. It is said, "when the term Yaho is used in conjunction with other syllables to form compound names the 'o' can be left in or dropped as preferred. When the Yaho is on the end of the word the 'o' or the consonant 'vav' and the vowel is often dropped; Yahoshua becomes Yashua in some instances." Much of this is believe to lean on the pronunciation of the Hebrew syllable VAV as "oo."