For what it's worth, I believe the largest welfare program in the US is the Earned Income Tax Credit. Many people with even one or two children receive welfare they barely even realize they're getting.
This could be an out of date stat, but at one point corporate welfare was double individual welfare.
Doesn't Catholicism lean distributist? I mean, I get that economics isn't doctrine per se (though doctrine influences it obviously) and I get that there could be a range of opinions. When I was in my late teens I was a hardcore Baptist ancap and I struggled with the merits of taking government money. I think libertarianism is quite consistent with Baptist theology. Not so much with Catholic theology (at least dogmatic libertarianism.)
To be clear, I'm not advocating modern welfareism. If you aren't willing to work, Paul says you shouldn't eat either. If you're already working 40 hours a week, like, I see no moral obligation of "oh, I have to work even more so I don't legally take money that was taken from megacorps that hate God and really shouldn't be allowed to exist anyway." Meh.
(To be clear I'm not advocating utilitarianism or theft. Taxation isn't theft per se.)