Serbian monarchists/fascists are the mainstream these days. Croatia officially “observes” anti-fascism, but in reality the parliament sponsors a fascist event in Austria etc.
Both of the countries are not as openly fascists as Ukraine imo. Not even close.
If I remember correctly, they had their communist party split in two, so both the party in power and main opposition are communist.
However, the country is not doing that great, people are leaving for work etc, so what seems to me like liberals are gaining some traction now, at least locally, as my Nepalese colleague tells me.