I have the kind of autism that makes me listen to them all in a giant playlist. No skipping but I had removed a few of the more shitposty ones. (One's like 5 minutes of silence followed by a nice cage "Boner" also the entire Fuck it lets be Santa album). But I listen to this way too often and I can tell absolutely no one.
Picking a favorite is difficult. I won't say they are my favorite but id highlight these two
Heir of grief - almost a cop-out answer but good god that one filled with emotion. It's kind of the end of Homestuck itself it's done, carry on with your memories of it and move on as the project is over. I mean not really but it was for me at the time that one came out.
It could also represent the death of a specific character (not to spoil anything) but it could also be the grief of those in the little community of musicians working around the project. I don't know much about that one and don't want to speculate on it. In either case that one hits me in the feels hard.
Green Ghost - The vibes on it are just perfect for my little daily walks. Chill as heck variant of Doctor. It has a strong sense of release and renewal.