DeGoogle Yourself

Murena (the company behind /e/ os) also sell smartphones with /e/ os installed. They've also partnered with Fairphone if you're looking for a more sustainable model. I bought the Fairphone with /e/ os a couple of months ago because I was looking for a phone with replaceable parts and it works well. They also sell some refurbished models I believe.

Here you can filter the search for Custom ROMs by release year. A few current models are already available: https://www.sustaphones.com/ beside Pixels i.e. Xiaomi, 2023, redwood X5 Pro 5G, Teracube 2e, 2022, emerald, Motorola g32, g42, g52, ...

I recommend you purchase a Google Pixel 6a or above (minimum security support ends July 2027) and flash GrapheneOS. (Pixel 8/pro preferred)

Aurora Store doesn't avoid Google since a lot of the apps from the play store include Google's SDK and libraries. microG also doesn't avoid Google as it is still running proprietary Google code and has more privacy/security weaknesses

Sandboxed Google Mobile Services is a much better implementation which is featured in GrapheneOS. The services are not privileged and is treated like any other app. They don't downgrade privacy or security unlike the other alternatives.

There are much more privacy and security benefits using GOS. Here is a 3rd party comparison between different mobile OS.

If you have the money and you care about not buying or owning a Google product, and / or you care about repairability, get a FairPhone: you can install ~~GrapheneOS or~~ CalyxOS on them and they too support relocking the bootloader. It's not just Pixel phones.

Bonus: they have a SD card slot, unlike Pixel phones.

They're not the speediest or sleekest devices, but that's not where the interest lies with Fairphone cellphones: they're mostly designed for long life and easy maintenance, and they're made by a cool company I want to support personally. And they're not made by Google, so buying one won't support Google or the Pixel ecosystem in any way.