Here’s what I’ve bought multiples of.
Cqc7s- 8 of them plus an HD7 plus a Kershaw Emerson cqc7 some of them I have given away and lost one or traded
On a simmilar note- 2 ZT 620s one of them was a cf but that one was stolen.
Spyderco Pikal - 3 but gave one to my filipino friend who needed a filipino knife.
Spyderco Southard - 2 of these badboys wearing nice clothes.
Hinderer Eklipse + ZT 392grnblk: Essentially the same knife from two different manufacturers.
Spyderco StreetBeats- 1 Micrata handle 1 Liteweight.
2 PM2s- A black and a digicamo s30v with satin blades.
2 Delicas and 3 Enduras- waved and zdp delica + 2 waved enduras and a ffg endura.
3 Brous Silent Soldier Neck Knives - 1 droppoint 1 wharncliffe and one Ranger model.
So yeah, I’ve owned a few multiples of the same knives. They’re often different iterations of the same knife.
After a while my taste in knives becomes pretty specific and I stop wanting to try every model that I think looks cool. I know what I want in a knife, often which style of knife I would like for each role.