Places the IBM Deskstar 75GXP (aka the Deathstar) around 2001 (Anandtech's review of that and the 40GV are July 2000), so that and the successor 60GXP are too new for your timeline.
Storagereview has the Deskstar 40GV in August 2000 for review, but the earlier Deskstar 34GXP as September 1999. Anandtech's roundup is March 2000.
7200rpm is recent but established enough that none of these are first-generation products. IBM Deskstar 34GXP, Quantum Fireball Plus KX, Seagate Barracuda ATA, and WD Expert WD273BA were all 7200rpm. Storagereview's Summer 1999 ATA Drive Roundup and the Deskstar 34GXP review has the Deskstar 22GXP and WD Expert AC41800 listed, both of which are a generation older than the drives mentioned in Anandtech's roundup. Maxtor DiamondMax Plus 6800 is also a thing.
Now if you mean IDE not hitting 10K rpm then you'd be correct, ATA didn't hit that til the WD Raptor.
Going back to the OP tho, if he really means the fastest drive possible, looks like the Quantum Atlas 10K is it, the Seagate Cheetah X15 (the first to get to 15K rpm) dates to 2000, at least per the review right here on SR. (even the manual is dated July 2000).