You have a pretty well-rounded performer there. Is there something in particular that you're not able to do that you want to do?
If not, unless you have a very high resolution/refresh monitor, you don't really need to do much with your CPU/MB/GPU at this time. I'd be inclined to get a better power supply in there for the long-term and while you don't really need 32 GB of RAM, you might as well if you can find the same stick so that you can take advantage of dual channel. On the RAM, I'd advise buying from somewhere with a liberal return policy; identical model RAM will usually work, but not always as only RAM sold together is actually tested together and guaranteed to work. You could get an NVMe, but since you already have a traditional SSD, you might not see much real-world effect.
Outside of those things, it might be a good time for quality of life upgrades. Maybe a higher-quality mouse or nice mechanical keyboard if you don't have these things. Maybe a better headset or a quality DAC for your sound. Or a nicer monitor.