Official fonts:
rayman3.ttf: Official Rayman 3 and M font by Ubisoft
https://raytunes.raymanpc.com/rayman_fonts/BATMOS.TTF (The original Rayman Raving Rabbids font)
https://raytunes.raymanpc.com/rayman_fonts/Font_RGH.ttf (Official Rabbids Go Home / UbiArt Rayman font, found by RibShark)
https://raytunes.raymanpc.com/rayman_fonts/Newell.ttf ("Newell", the Rayman 2 site font which was pretty stylish IMO)
https://raytunes.raymanpc.com/rayman_fonts/Chelsea-Book.ttf  ("FF Chelsea Book", the font used to spell "The Great Escape" in Rayman 2's logo)
https://raytunes.raymanpc.com/rayman_fonts/Showcard Gothic.ttf ("Showcard Gothic", the font used on the Rayman Legends back cover, found in the Rayman Beatbox files)
https://raytunes.raymanpc.com/rayman_fonts/goodgirl.ttf ("Good Girl", the font used in the Rayman Legends Definitive Edition logo)

Fan-made fonts:
https://raytunes.raymanpc.com/rayman_fonts/Rayman%201.ttf (Rayman 1 font by Droolie, check this post - http://www.raymanpc.com/forum/viewtopic.php?p=616294#p616294)
https://raytunes.raymanpc.com/rayman_fonts/rayman_2.ttf (Rayman 2 font, source unknown. In Droolie's opinion, this is the best R2 font!)
https://raytunes.raymanpc.com/rayman_fonts/Rayman_2_Font.ttf ("Rayman Escapes" Rayman 2 font by MixerX & FontDream tpgStd)
http://www.dafont.com/rayman-adventures.font (Rayman 2 font by Zodiak Corporation, check this post - http://www.raymanpc.com/forum/viewtopic.php?p=720730#p720730)
https://raytunes.raymanpc.com/rayman_fonts/rayman.ttf (Rayman 2 font, source unknown)
https://raytunes.raymanpc.com/rayman_fonts/Rayman2BetaFont2.ttf (Rayman 2 beta font by Robin)
https://raytunes.raymanpc.com/rayman_fonts/Racing%20Hoodlums.ttf (Rayman 3 and M font by Droolie)
https://raytunes.raymanpc.com/rayman_fonts/Rayman%20Origins.ttf (Rayman Origins font by Droolie, check this post - https://www.raymanpc.com/forum/viewtopic.php?p=662465#p662465)