Have you seen the NPC codex from Pathfinder? It has fleshed out builds for all the core classes for every level up through level 20 and versions of the "iconic" classes for 1,5,10,15,20 (if I remember right). It should give a couple good idea or places to start from if you use some of the higher level builds to build off of.paizo.com/products/btpy8sdq
ncG1vNJzZmivp6x7prrWqKmlnF6kv6h706GpnpmUqHyiutiwn56qlWLBsHnFoqWdZWJlwal5y56tnqRdpb%2Bms8SnqmdrY2mAeYOO