Some are Obviously far more synergistic, but none of the classes will clash with the warforged traits. Muti Ability Dependent (MAD) classes might be fewer best, although the enhanced survivability from the CON Increase makes up for it. Sky Blue is a fantastic option. If you don't take this option https://tortleranger79023.thelateblog.com/28596892/a-secret-weapon-for-orc-5e-stats