But anything at all that runs Windows 11 will almost certainly do you fine. Just make sure it has at least 8GB of RAM. That is the minimum I would use Windows 11 with. And an SSD.
I'm working on an old 2012 Lenovo here that I put 16GB RAM and an SSD in and I'm editing 4K video. It's not quick, but it will do it. Certainly works with me having literally 200 tabs open in Chrome, Visual Studio, Photoshop etc.
And just the windows explorer is slow. Hurts my pace. Can’t figure out what is happening.
I have a 6 year old 7th gen i5 laptop here with 16GB + SSD in it and it is smooth as butter with stock Windows 10 and about a billion things going on. I have it running two screens and I use it for editing 4K video, doing livestreaming etc. In fact, I have a second identical one with only 8GB in it and it is perfectly fine as long as it doesn't go to swap.
The SSD I put in is a $10 job from Amazon.
I wonder how to get some sort of system-wide profiler that will show where the hang-up is?
The 6th gen laptop darling was the i5-6200U which has 4 thread (dual core) CPU. I have an Asus Zenbook with one of those and unless I want to compile a kernel in a hurry it's still perfectly functional for all tasks. You can get the same CPU in a second hand ThinkPad X1 Carbon for well under US$200 these days.
I'd probably draw the line at Sandy Bridge (2nd gen) as they're the first with AVC and VC1 video decode. Haswell (4th gen) adds come VP8/VP9 decode on Linux. H265 doesn't arrive until 7th or 8th gen (but if you're building a TV box for that, get a Pi 4 which does it perfectly at 4K).
Anything older than 8th Gen Intel processor won't run Windows 11 without some hacking. Sure, Windows 11 isn't all that well liked, but it's not a good idea to buy a system that won't even run the newest OS. You're going to be out of support before you know it. 8th gen processors were released in 2018.
Also, a ten year old system is likely to have a spinning hard disk instead of an SSD. Spinning hard disks are frustratingly slow.
Also, before the 8th gen release, you couldn't even easily find a 14 inch or smaller laptop with a 4-core CPU because of the cooling requirements. I think a 4 core processor is becoming somewhat of a necessity these days.