What’s interesting is those letters were not used until Ezra introduced them after galus bavel. Prior to that, everything was written in what is termed paleoHebrew script , which looks totally different. Nobody knows why ttche switch was made to Aramaic block lettering. I judt read somewhere that the Samaritans never switched and their sifrei torah are still written in paleoHebrew ( letds noutt argue about their kashrus
