Outside Quebec, its true you are seeing a lot of similarities still on some issues two countries pretty far apart. Canada is much less religious than US so social conservatism doesn't have same clout. Likewise immigration until recently (mainly due to high housing prices) had less backlash as we don't share a border with a country where illegal immigration widespread. On economic issues, Canadians don't have same negative view Americans do of government. A government monopoly on health care whereby private competition banned in basic health care is very mainstream in Canada, whereas in US is a fairly left wing position and not a mainstream Democrat one. Heck even in Europe, it is fairly left wing too.
At same time Quebec is different not just culturally but even in voting patterns. Right federally usually gets in teens or 20s even in rural areas outside a few pockets (like Chaudiere-Appalaches region which goes heavily Conservative) which you don't see anywhere in US on a large scale. True provincially not case although prior to emergence of CAQ was same provincially too. In fact support for parties on right is amongst lowest in Western world with perhaps Scotland being only other area where right routinely does this bad.
I agree with most of what you said; I was just addressing certain parts of your previous statement.
I disagree on a few points, though. A public option is supported by a majority of Americans (in both parties), but Republican politicians are pretty much unilaterally opposed to that. Canada's healthcare system is essentially a public option (private insurance exists in Canada, though it's mostly supplemental).
Also, I wouldn't say that Canada is significantly more irreligious than the US; it's just that White evangelicals (especially Southern ones) make up a higher percentage of the population in the US than in Canada and unfortunately have an outsized influence on US politics.
I would say Americans on health care more like Europeans, East Asians, Aussies, and Kiwis as those all have universal health care unlike US, but unlike Canada it is not illegal to go private if you wish. Canada is only industrialized country that attempts to make it illegal to pay for private health care and public on this is pretty evenly split on this ban. Polls show idea of ban on private competition is pretty mainstream although many support a mixed system too. Now yes Canada does have a large private component in health care, but it is strictly for supplemental (otherwise what government doesn't cover). There are a few places you can pay for things covered as some have exploited loopholes but current government is trying to end that and Canada Health Act also forbids it or at least many interpret it that way.
On religion, Canada is more like your typical western country in religiosity. US is unusually religious for a high income country while Canada is middle of pack, similar to UK and Australia, but more religious than Low countries and Nordic Countries.