OP, much of what you describe does not even seem applicable to the average Catholic but to many “Traditionalist” Catholics. Nonetheless, some of your assertions are worth addressing.
Fears about leftism, socialism, communism, Marxism, i.e. anything left of the above.
Um, yes, because those things are all contrary to Catholic teaching (and, for that matter, Christianity period).
Praise for Putin; denial of interference in western democracy.
What are you talking about? This is not a “Catholic” issue, this is just what some Trump supporters are guilty of. This has nothing to do with views of the typical Catholic.
Reliance on right-wing media (Breitbart, Fox, RedState, LifeSite, Washington Examiner, NY Post) with no awareness of their bias.
This is indeed an issue with some, but this is, again, is not a “Catholic issue”. You’re generalizing. This is an issue not even just with those on the right, but those on all ends of the political spectrum and with America in general; we have become so partisan we cannot see how biased we often are.
Hostile to mainstream media; perception that objective news sources, e.g. BBC, are biased; perception that fact-checking sources, e.g. Snopes, Full Fact, are biased.
Well, this is partly true for the reason I just mentioned above about partisanship. However, there is good reason to be suspicious of the mainstream media nowadays. Partisanship aside, the media is largely comprised of those on the left, and some Americans are tired of being told by the media how they have to think and behave instead of just being given the news in an unbiased manner.
Anti-Semitic canards: Jewish influence in media, entertainment, finance, as well as in communism, dog-whistles about Soros; reference to “cultural Marxism” (Nazi conspiracy theory).
This is a view more prevalent with pre-Vatican II, or “Traditional” Catholics. Again, this is not reflective of the views of most Catholics. You’re generalizing again.
Covid-19: anti-lockdowns, anti-masks.
The anti-mask movement is stupid, but I am opposed to lockdowns unless absolutely necessary. They have an unintentional consequence, which is the economic and mental damage they cause.
Anti-feminism; support for an exaggerated form of masculinity.
You’ll need to elaborate on this point, specifically on how you define “feminism”.
A readiness to explain (or overlook) appalling behaviour by Trump; false claims about Biden (e.g. dementia); unsubstantiated claims of electoral fraud.
Overlook appalling behavior from Trump? Yes, you do see some of that, I agree. And I also agree the electoral fraud claims are unsubstantiated. As for Biden, I don’t know if he has dementia, but it is clear he’s aging, that much is certain. And I don’t care for him as a candidate or politician.