So over the past couple weeks I've been condensing Ravenloft into small, bite sized chunks with bullet points. This is the end result! All 20 of the core domains are reduced to around a page each, for ease of reference at the table.
Obviously, this is not necessarily Ravenloft as written, as I have made slight changes to the world, and also there is no map, so it is not a complete setting. But if you want to run a Ravenloft campaign, this document plus one of the official guidebooks by WOTC/TSR should help you out!
I, of course, make no profits off of this document and hold no rights to Ravenloft or the Dungeons and Dragons Role Playing Game.
Anyway here is the document, have fun!