2024 Phb Warlock Of. It is a new edition by most definitions, but they don't want to spook those who bought 5e content meant to be compatible by calling it 5.5e. Great old one patron(phb) the great old one warlock is a good generalist, with a good mix of all of the warlock’s capabilities.
The 2024 phb has overhauled the archfey warlock patron significantly. But let’s see how compatible it truly.