Tasha's Cauldron of Everything: Only offers one additional subclass that hasn't been updated for the new rules, but it's a good one. Explorer's Guide to Wildemount: Introduces the Echo Knight. Forgotten Realms
Tales from the Yawning Portaloffers a variety of one shots that are guaranteed to satisfy. Every adventure in this book is a re-tooled version of a classic D&D adventure, and pretty much all of them offer an engaging challenge. This book will be less interesting to players who prefer more...
Having published four 5th Edition-compatible one-shots available online and in local stores, and run many in-person 'Learn to Play' events, we launched a successful Kickstarter in 2022 for the Ritual Spellbook & Witch Class; a 128-page supplement including spells, mechanics...