Okay...#s 8 & 9 are the Acrylics so they are out. Think about a CA finish...You build it up and then sand back flat and smooth. My tube fluorescent lights are parallel to my lathe bed and therefore parallel to the pen I'm making. As I sand, smooth and polish I watch the reflection of the light off the pen body. The sharper and crisper the light the higher the gloss of the finish. The reflection is straight with sharpe edges.
If you apply another finish, such as Dr's Pens Plus or other friction or polys, it will follow the grain and "uneven" finish to the wood. Look real close and you can see the slight waviness of the reflection on pens 1 & 4. The other including what you can see on #10 are sharper reflections so the 3rd must be #11.