I have most Pi models from model B.
In my experience Raspberry Pi OS / Raspbian works better on most (particularly old models).
I still run Stretch on my B+ (which is running a logger) and agree Chromium, while it works is painfully slow.
I wouldn't even consider Raspberry Pi OS Bullseye (The latest official OS) on any of the older Pi. Buster (which is still available as Legacy) is a better choice as Bullseye is targeted at later models.
The BCM2835 SoC used in early Pi is based on ARM6.
The early Pi software was adapted to ARM6 and applications were designed for the limitations of the CPU & memory. This particularly applied to browsers.
Recent OS are increasingly designed to utilise the capabilities of newer hardware.
If you want to use 13 year old hardware you can't expect 2023 software to run but if you stick to the original software performance should be adequate (although increasingly web sites use new features not supported by older software).
Midori & Epiphany are still in the repository.