Who are all the celebrities that were ever mentioned or featured in Homestuck?

Guy Fieri, ICP, Nicolas Cage, Charles Dutton, Dante Basco as Rufio, Mr. T, Snoop Dogg, Dane Cook, Owen Wilson, Ben Stiller, Donald Glover, Jeff Foxworthy, Bill Cosby, Bing Crosby Will Smith and Colonel Sassacre is based on Mark Twain.  I’m sure there’s more but that’s all I can think of right now.