Muhammed (محمد) is not of Hebrew origin. It is of Arabic origin. But the base consonants of this name form the Hebrew root ח.מ.ד which means delight.
In Arabic, Muhammad means "praiseworthy."
Shae is a Gaelic name. It has no meaning in ancient Hebrew.
Gregory is of Ancient Greek origin and has no meaning in Hebrew.
"madama" has no meaning in Ancient Hebrew", but it's close to adama (אדמה), which means earth or soil.
This phrase has no meaning in Hebrew. In fact, the vowel combination "au" does not exist in Hebrew.
Ahmoses has no meaning in Hebrew. It is an ancient Egyptian name that means "born of the moon".
"yahoo" has no meaning in Hebrew, except as a suffix in names (-yahu), in which case it means God."ed" (עד) is the Hebrew word for witness (it's the same word in both Modern Hebrew and Ancient Hebrew.
Only in Modern Hebrew. The word is tsulav (צולב) which literally means "crossed". Ancient Hebrew has no such concept.
It is an old Hebrew word meaning "it is finished."
Kahana is a European Jewish name, that is related to the Hebrew name Cohen, which is the term for ancient Jewish priests.
"Blake" has no meaning in Hebrew. Only Hebrew names have meaning in Hebrew.
The name Latoya has no meaning in Hebrew. Only names that come from Hebrew have meaning in Hebrew.
If you are asking which letters are not in the Ancient Hebrew alphabet, there are none. The Ancient Hebrew alphabet is identical to the Modern Hebrew alphabet.