I think most people who care have already seen this, but a while ago I made an entire project for a series of VCOs. These are not in the library, they are just to use as examples.
The readme talks a lot about how to measure aliasing and CPU usage, among other things. The final version (VCO3) Is as fast or faster than any VCO I’ve seen in VCV, and has very low aliasing.
That project I guess “inspired” directly my Organ-3 and Basic VCO modules, and to some extent Kitchen Sink.
Here it is: GitHub - squinkylabs/Demo