I assumed that all Arab League countries who have not publicly objected to the decision to classify Hezbollah as a terrorist group agree to it.
Russia's actions are implicit support for Hezbollah although I am not aware of any public pronouncements. The support of the rest of the entities on the right are explicit.
Palestinians - and Arab Israelis - are virtually alone in the Sunni world for supporting Hezbollah. And this is one rare issue where there is unanimity in support among the PA, Islamic Jihad and Hamas.