Michael Gallo (Neocrius) has probably done the most illustrations in Aegeon.
His steam page: https://t.co/exnwsT0hj4
Portfolio: https://michaelgallo.eu
Amazon author page: https://www.amazon.com/-/e/B0FTNTLKDB
Mxiani is the second most prolific Aegeon artist, who has also illustrated for Guts.
Mxiani X:https://x.com/mxhani1