There are so many conflicting versions on that T number.
T1 is always first Sound Blaster 1.x and T6 is all the 16BIT capable Sound Blasters.
But with other numbers, things get tricky.
T2 is really the first Sound Blaster PRO not Sound blaster 1.5.
T3. IS really Sound Blaster 2.0
T4 is the Sound Blaster PRO 2.
T5 is somehow offered in some games literature and some sources as Sound Blaster PRO 2. Some say it is the MicroChannel version.
So there are some conflicting information.
But that fandom wiki is WRONG.
PS. Some crazy literature even says that Sound Blaster McroChannel is T10 😁
I am aroused about any X86 motherboard that has full functional ISA slot. I think i have problem. Not really into that original (Turbo) XT,286,386 and CGA/EGA stuff. So just a DOS nut.
PS. If I upload RAR, it is a 16-bit DOS RAR Version 2.50.