Most colorheads have somewhat yellowish light to begin with due to tungsten-halogen bulbs. But there are other kinds of sources. For example, I have a blue-green cold light atop one of my 8x10 enlargers. I generally start with unaltered light when making a test strip, then tweak it as needed via filtration. But I've gotten so comfortable with this, that I pretty much know what to expect up front, even using different enlargers, different films and formats, different papers etc. The whole point is, pick the correct shoe size for the foot, meaning treating each specific negative as its own problem, rather than approaching this task with a "one shoe size fits all" or generic "silver bullet" mentality. There all kinds of tools available for improving print visual quality, and filter selection is integral to VC work.
I totally ignore any paper "grade" mentality. That might make sense when printing actual graded papers, but has little relevance in VC printing unless one is somehow stuck in a time warp - which is OK if it helps them think things out, but is apt to be just an unnecessary complication for someone starting out with VC papers to begin with. Of course, it is also important that one dials in their film exposure and development protocol for predictable results. Modern VC papers are quite versatile, but can't fix every flat tire.