There is no such filter because today every graphics card can handle pretty much any resolution for which monitors also exist. Even with the graphics unit of the CPUs (if available), 3440x1440 is possible without any problems.
A recommendation is very difficult without understanding exactly what the requirements are.
Either you buy according to budget. If it is clear how much you want to spend, an overview like this helps:
https://www.computerbase.de/thema...
Alternatively, you can consider which games are important to you and look for corresponding benchmarks. For Anno 1800, for example, I found this test, which is no longer up to date:
https://www.pcgameshardware.de/Anno-1800-...
Just set the resolution to 3440x1440 and you can see what frame rates you can expect. It should be noted, however, that the tests are with high settings. This means that you can always reduce the settings to achieve better frame rates.