The Roth-Steyr M1907, designed by Karel Krnka, and the FN 1910, designed by John Browning, were both successful striker-fired handguns predating Herr Glock's birth (1929). Glock was a late comer to the striker-fire, dropping block, locked-breech, polymer-frame parties. Good advertising and a horrible movie franchise (no one talks about Die Hard 2 except to note the errors about Glock handguns)
But, in order to know any of that, you'd have to be curios enough to find out who actually invented the striker-fired mechanism, polymer frames, and the dropping-block/locked-breech action.