Sadly, no. The only way to organize music is by what game they're from & which songs you've favorited. But if you're able to clear 99% of the charts in 4B, that's great. The only chart I couldn't clear was Hamsin MX, & that's the only 15 rated chart for that mode (until you get the Trilogy DLC with Ventilator, the only other 4B song that has a 15 rated chart).
Having the DLC to play new songs has seriously helped with the grind. Now almost at 270k total score, passed 800 play counts, & realized I should start working towards 100 8B plays (just hit 40). Might've hit my limit on missions again (51 cleared), might have to wait for future DLC to finish 9 more so I can finally get the Glory Day gear skin (still need to figure out how to get the Oblivion note skin)
Actually, so now that I think about it, what is it with some songs not having a Hard chart, yet have a Maximum one? Could they not think of a chart that was happy medium between the two difficulties? Why not just call it "Hard" or would it be too big of a jump?