If you go by the CPUID family identifier, then essentially everything from the Pentium Pro to the latest x-Lake are all in the P6/686 family. The only exceptions are Netburst (P4) with a family of 15(!), the GPU-ish Knight's Ferry/Corner in family 11, and Quark with its Pentium-level instruction set still in family 5.
https://en.wikichip.org/wiki/intel/cpuid