Comparing Yahweh to Jehovah, not particularly close is it.
The Orthodox Jews dont even use Jehovah and this god originated from them.
Anyways JWs are not true witnesses for Jehovah or Jesus since they are apostate false prophets/teachers.
The originating men (Russell, Rutherford) self proclaimed they were selectively chosen by God (Jehovah)(1919) because of their truthful and accurate bible adherence,
This self propagation was made by these men only but the bible says their activity was an act of apostasy in direct apposition to Jesus's instructions for preaching his new Kingdom order.
Jehovah is a Latinization of the Hebrew יְהֹוָה