Both groups are tools and committed to secession from Kyiv. No opposition, of course.
They have a foreign policy consensus, no different than the Democrats and Republicans in the US. But there are definitely differences between Donetsk Republic and Free Donbass. Free Donbass, the opposition, is a bit more economically socialist and I would say a bit more 'radical' in general.
This is a joke. After all, they aren't able to hold elections in the part of Novorossiya occupied by the Kiev fascists.
The rest of Novorossiya will be liberated, all the way up to Odessa oblast and probably including Pridnestrovie (AKA "Transnistria"), after Kiev's next offensive has been defeated. Half of my ancestors lived there and it was pretty easy to see a breakup of the Ukraine coming far in advance. The US government and the EU constantly meddled in Ukrainian politics, overthrowing two southeastern-led governments in ten years. After the atrocities committed by the new Kiev regime's military and fascist death squads, there is no turning back. Full Novorossiyan independence is only a matter of time.