Botha-He is remembered among hexmages as the first true hexmage. Not only did he's discoveries regarding the operation of demon control hexes serve as a foundation to nearly all subsequent research and development on the subject, but he's entire life changed mage society. He was thought to be a seer initially, but his behaviour, methods, values, and demeanour were so divergent from the seer norm. Others who took up this expanding field of research and development were also identified as divergent seers, as were some who had dabbled in the field before Botha revolutionised it. In the last few years of he's life, mage society officially recognised (inasmuch as mages officially recognise anything - it would be more correct to say that the data entry drones updated drall's records to reflect the change in societal trends, for convenience) hexmages as a separate societal role from seers, and thus Botha's role-name changed to Botha-He. (While the old backup copies of Botha's work as a seer are listed under he's former role-name "Botha-She" it is considered an error by mages to use a person's out of date role-name.) While Botha is little known outside the hexmage community and the adjacent subcircle of seers - as hexmagery is beyond thall's ken - he is celebrated by hexmages both as the one who made hall's work possible, and the one who defined hall's societal role and the first of hall's pronoun. Many make homages and references to hem in hall's work, especially he's tag "_sixteen".
More well known to all of mage society is the mythological figure from the unfiled past: Bernstone. (Bernstone is sometimes referred to by the role-name Bernstone-She for convenience and by seers who want to claim them as one of shall's own, even though they's legend predates the establishment of the original five societal roles (hexmage is the sixth) and thus no one knows what roles and signifiers they would have used during they's life, if they was indeed a real person not just a myth, which is unprovable.) Bernstone is credited as the first to research and describe the behaviour of aether as motes, which is foundational to one of the major branches of magic.
(Mage translation note: they, them, and they's are third person neutral singular. The plural forms are thall, thallm and thall's. For second person, you, youm and you's are singular and yall, yallm and yall's are plural. Role specific pronouns follow the same pattern, i.e dro, drom, dro's, drall, drallm, drall's for drones, ju, jum, ju's, jall, jallm, jall's for conjurers, etc.)
As you can deduce, progress in understanding and application of magic is one of the highest valued things in mage society. The artistic side of culture tends to stay on a personal individual level. What is popular or well known or influential in the arts isn't much investigated or discussed. With that said, the tattoo artist Blanc-Ju's designs are very common in Wonambi, so ju can be said to have left an indelible mark on the culture which has changed the look and feel of many of the dayclubs, though few are aware of ju's significance. And an up and coming new artist of note is the wig-shaper Wyre-Ju, who is unknowingly poised to make a big splash into the colour mixture of the tunnels and halls...
On the other side of the tracks, The Pure primarily venerate The Great Maker as the bringer, maker, designer, constructor, planner, and engineer of all things. In legend, He personally gave mankind all their knowledge including technology and laws, and He has been observed doing so occasionally in recent times too. So that doesn't leave much room for regular human cultural heroes, other than those who do great work in honouring the Maker. The clerics don't take too those who seek or receive glory entirely their own. But many in the railway industry remember Hank Grundtalson, a safety inspector legendary for his record for spotting flaws in mechanisms of all kinds, thus preventing disasters both physical and economic, and thus saving many lives and a lot of money. Some tried to diminish his legend (and his criticism of their designs or constructions) by saying he had cracked and become paranoid, but he is still deeply honoured by most who know of him. Tragically, Grundtalson and most who knew of him best lived in Nearton's Bend, and he was among those who bravely and futilely fought back.