As far as I know, there is no tradition of Lashon HaKodesh pronunciation in which there is a sound that matches the "ch" (IPA: t͡ʃ) of English.
Is there any significance to this omission in Jewish thought? Is this sound somehow less holy (not being part of the Holy language)?
The world was created with Lashon HaKodesh (Rashi to Bereishis 2:23) - would there be any significance to this sound not being a part of the creation process?
A great answer to this question would be if someone corrects my assumption that there is no such sound in any tradition of pronunciation.