I voted for the Umbaran Sly Moore.
I'd like to add some remarks. The Rodian Senator in Episode I does not have a name. This name is not official. It has been given bij 'red6 encyclopedia'. He is named Onoconda Farr in Episode II, but we don't know if he was already a Senator in Episode II.
Pu Nudo is not present in the Senate either. De Andoan Free Colonies decided to contineu their support to the Republic while Ando itself seceded. The Andoan Senator is Gorothin Vagger (source Eps II DVD Depth Commentary).
I don't think the corporations did still have a representative in the Senate. About Calamari, you could say that Tikkes was just a corrupt Senator and that he was replaced by Tundra Dowmeia. I don't think Castell, Muun and Kooriva still had a representative since their planet was too closely allied with the CIS Fractions (Commerce Guild - Banking Clan - Corporate Alliance).
At least these are my thoughts