Among the several historical and pseudo-historical scripts this atlas covers, Theban J belongs to the simplest family: it is a straight substitution for a single Latin letter, with none of the underlying Hebrew alphabet Celestial, Malachim and Passing the River recode, and none of the separate twenty-one-letter constructed language Enochian claims for itself, both discussed elsewhere in this atlas. Because the 1518 printing that introduced Theban predates the graphic separation of I and J discussed elsewhere in this atlas, most reproductions of the cipher, including the charts modern Wiccan writers popularised, still share a single sign between the two letters rather than giving J one of its own, a detail that has occasionally puzzled readers encountering the script for the first time through a modern source rather than its original context.
Modern Wiccan reference books, most influentially Scott Cunningham's widely read 1988 guide for solitary practitioners, reproduced a Theban chart as a practical private alphabet, and the script is now one of the most commonly seen ciphers in general pagan and occult-adjacent material, turning up in printed Book of Shadows templates, jewellery, tattoos and fantasy media alike, usually with little or no reference to Trithemius, Agrippa or the disputed Honorius attribution covered elsewhere in this atlas.