I have the same problem. One thing I thought about is "visual comparison of my graphs" in style of Tinder, left swipe / right swipe. Divide & conquer. Slope, t

I have the same problem. One thing I thought about is "visual comparison of my graphs" in style of Tinder, left swipe / right swipe. Divide & conquer. Slope, trend and others seem not to fulfill my needings, as my data sometimes is similar. I doing it with weighted average right now. But eager for other solutions. Let's hope you'll get a professional answer to your question.