After reading Oathbringer I began to think that each Order of Radiants acquire their Squires through different methods. Windrunner Squires clearly need to feel a strong bond with their Knight. Skybreakers appear to be able to "deputize" individuals to make them a Squire, like Ki did with Szeth. And it seems like Shallan only gets them after she reveals the secret of her being Veil, so maybe Ligthweavers need to share secrets or just be honest with their potential Squires. Is there anything here or am I overthinking this?