Here’s some things I found in my research before I bought that one. Maybe you’ll find them helpful since you’re looking at it from the same angle I was.
Modern dumb phones have come a ways since the mid 00’s. The few dumb phones I was looking at also support hotspot. That was the big thing that pushed me to try this since I frequently rely on my phone being a hotspot for work, and I assumed dumb phones couldn’t do that. Seems like that’s a fairly common feature on them these days.
A lot of them run KaiOS (which is kind-of FirefoxOS in the same way that Android is a Linux distro). They have decent web browsers (Firefox, obv) as well as apps, including TOTP. The only reason I “need” the bank app versus the online banking through the web browser is occasionally needing to do a few things that only the app can do (scan to deposit checks, etc). I was willing to go without the bank app, though.
I was originally looking at the Nokia 2780. The only reason I went with this one instead of a true dumb/feature phone is that I knew I could use this one as a SIP handset, if nothing else, after my 30 day challenge was up. It was also about $15 cheaper than the Nokia, so that pretty much sealed it. I could probably get by with a regular dumb phone, but this one is kind of the perfect middle ground for me.
I’ll upvote a Suzy Izzard bit any day.