Australia

Labor are right wing centrists.

No. They are center. They were way ahead of the coalition on market friendly economic reforms, floating the dollar, abandoning many tarriffs, reducing subsidies, privatizing the comm bank etc. It wasn't until Howard that the coalition started to catch up and Labor still take a very responsible and balanced approach to economic management.

To be fair radical left wing politics has not been competitive in the world and wouldn't be competitive politically here. They can't maintain the economic productivity needed to deliver wealth and quality of life improvements demanded by working people so they always end up in autocracy or revolution. That is why social democracy thrived and why China has a successful mixed system. The problem is maintaining the balance between social policy and capitalist wealth creation. The social policy side is constantly undermined by the ultra rich, lobby groups and the flip flop election cycle and people start to take things like minimum wages, public healthcare and education for granted.

Now, if your conceptualization of right vs left isn't the traditional capital vs labour but the weird US culture war bullshit then the ALP are pretty much dead center as well (their right faction strongly overlaps with the coalition). It is a fairly laid back and generous country for the most part and most regular people don't want to be like the yanks and be polarised into us vs them hate politics.