The Asus NUC 14 Pro, is a compact, 4 x 4-inch mini PC powered by up to an Intel Core Ultra 7 (Meteor Lake) processor, backed by up to Intel Arc graphics. You can choose between 8GB and 16GB of DDR5 RAM.
The Asus NUC 14 Pro+ features an anodized aluminum 5 x 4inch chassis, up to an Intel Core Ultra 9 processor capable of running generative AI workloads, backed by Intel Arc graphics.
Do they still offer the bare motherboard/cpu NUC kits?
Yep, they still do. https://www.asus.com/us/displays-desktops/nucs/nuc-kits/filter?Series=NUC-Kits