Judging from manuals I have, and some forks on the shelf:
1996 - Mach 5 SX
1997 - (from catalog) SX, SX Ti, FS, FS Ti, Pro, Pro-C, DH
1998 - Spyder (incomplete manual, I have R version), X-Vert, X-Vert Ti, Mach 5: Pro, SX, SXR, SXRS, SXTi
1999 - Spyder, Spyder R, SX: E, SXR, SXTi, SX Carbon...