Here’s BRW Games’ first go at a DM’s Guild product. We present the classic layout of the planes of existence for Dungeons & Dragons, and convert a number of 1E elemental-type monsters into 5E. Do check it out if you’re at all interested in 5th Edition D&D.
https://www.dmsguild.com/product/253602/Classic-Cosmology?affiliate_id=203434