Profiles that work with ortholinear - its flat.
dsa - 7.1,, high tex - like dsa but a bit more rounded for a vintage vibe- 9.mm high xda - dsa with more contact surface - 9.1mm high kam - also flat - 9.1mm g20 - very close to dsa height with 3% lean back.
sa profile - sounds the best by far. Sa-p signature plastics. Thicker thock. All r3 profile uniform for flat boards.