Just found this rating list below while looking for other items.
I vaguely remember hearing about WCC.
What happened to them? All I find now for WCC is 'world chess championship'.
Apparently they both rated top players.
Combined Top 100 - January 1999 FIDE and WCC Chess Rating Lists
Note: The 1999 FIDE World Chess rating came late and contained errors. This is the fourth and presumably the final version of the FIDE top 100 list. UPDATE: The Combined rating lists for July 1999 are posted at http://www.gmchess.spb.ru/ratings/july99.html
Rank Name Country FIDE Rating Name WCC Rating 1 Kasparov, Gary RUS 2812 Kasparov, Garry 2803 2 Anand, Viswanathan IND 2781 Anand, Viswanathan 2750 3 Kramnik, Vladimir RUS 2751 Kramnik, Vladimir 2724 4 Shirov, Alexei ESP 2726 Shirov, Alexei 2712 5 Morozevich, Alexander RUS 2723 Kamsky, Gata 2701 6 Adams, Michael ENG 2716 Leko, Peter 2693 ...........