Arabic Rum (Rome) and Assyrian Urmia!

Possibly, or it can even be Greek or Latin.  It would be presumptuous to say that Rome was an originally Etruscan foundation, given that it had a mixed population composed of Latins, Greeks, Etruscans, and Sabines.   While we do have an Etruscan word "rumon" meaning "river" and the Etruscan name "Ruma", for Rome, we also have a Greek word "reuma" which meant "flowing", and so also had bearing regarding the neighboring Tiber river.  There is even a Latin word "ruma" meaning an animals "hump" which may describe the original settlement of Rome from one of its famous hills, perhaps the Pallatine.

Too farfetched.  None of the pre-classical (Assyrian and Urartian) inscriptions describing the geography of the region don't even hint at such connections.  The first notice of the existence of Rome from a foreign source is that of the Greeks.  Stesichorus, by about 600 BC, mentioned that Rome was founded by a woman named Roma.  The Romans don't make an impact in the region of Mesopotamia until the 1st century BC, and only established short-lived provinces there beginning 116 (Mesopotamia) and 117 (Assyria).    After that other temporary provinces were set up.  Names with the name "Rum" are probably the result of Roman occupation of the region, not to Roman origins in the region.