Filter wheels are usually used by people shooting with mono cameras to change between Red/Green/Blue, or between narrowband filters. With a colour DSLR camera you're unlikely to be wanting to change filters often enough for a filter wheel to be useful. Also for many scopes it will be impossible to get the focus (back focus in particular) lengths correct with a filter wheel taking up space between your DSLR and your scope (dedicated astro cameras have the sensor much closer to the front which gives space to get this in).
I think the most likely filter you're going to want for a DSLR would be a dual-band filter. This is a narrowband filter that lets Ha and Oii through, and allows you to do narrowband imaging reasonable efficiently with your colour camera. People seem to disagree on light pollution filters - I watched a YouTube by NebulaPhotos where he compared different ones, and I concluded the difference in the final images was too marginal to be worth the hassle! Others may have different opinions. I suspect it depends a lot on whether your local light pollution is mainly old sodium lights, or LEDs. If LEDs then don't bother.
I don't think there are other particularly useful filters for a DSLR, but am not an expert.
[edited to clarify it was me that decided LP filters not worth it, not NebulaPhotos]
Edited by hollo, 02 October 2022 - 11:21 AM.