LOL.
What a great answer. I guess if you use the word 'continuum' in your post, you sound like you know what you are talking about.
The real answer is: No one knows, exactly. Some people refer to Prilipin's chart, which might work, but it's designed for Olympic Lifting.
So take a step back, and figure out what causes hypertrophy. What is it a function of, to use a mathematical analogy.
f(x)= ?
We know what the factors are, right? Sufficient nutrition, adaptation to increasing demand, contractile strength, neuromuscular efficiency, fatigue, just to name a few.
What are the biggest factors?
How much you eat, and how quickly you get stronger in a rep range that causes hypertrophy.
That rep range is somewhere between 1 and 20, although 5 - 12 is a very nice place to be.
The number of sets effects fatigue and can effect how quickly you progress. We know 1 isn't enough. Is 2? Is 3 better than 2? How about 5?
What you'll find is there is a range, based on your total training volume, your intensity (defined as % of 1RM), frequency, speed of progression, that works for a particular lift at a particular time.
You'll also find that it doesn't matter much if you do 4 sets instead of 3.