I use the Citi Double Cash card for all non Amazon purchases and I love it. It’s a fantastic workhorse card. No fuss, whatsoever. Been using it for a few years.
I bank with Alliant. I like them a lot, too. I have noticed some occasional unreliability with Plaid and Yodlee, but it usually gets resolved pretty quickly. They are one of the top 10 largest credit unions in the US.
Also, they used to be famous for being very no frills, but they’ve recently been making lots of improvements to their online services, so perhaps they’ve turned over a new leaf.
I haven’t gone for the Alliant Visa card because last I saw, complaints were common (could be a different wing of the organization than their bank?), and I don’t want any headaches.