It doesn't seem that complicated to be honest with you. That is how they self identify but none of their policies seem particularly left wing. At least not from that Wikipedia page. Extremely left wing dental care is the best I will give them.
> Extremely left wing dental care is the best I will give them.
Free dental care is considered "extemely left wing" now? That's just bizarre tbh.
If a country would decide to use tax money to provide health care services for free to everybody that's not much different than using tax money to maintain an infrastructure network that's free to use (like roads), or free police and firefighting services - and I think none of those examples are considered particularly 'left-wing'.
What about more social housing, reductions in working hours, and opposition to privatisation? Sounds left wing to me.
They have been called Marxist-Lenninist by more mainstream politicians: https://en.wikipedia.org/wiki/%C3%96rebro_Party#2021_bus_rap...