I will try and help.
I base movement on what type of pitch it is. Some pitches break vertically and some break horizontally.
For example, Yonny Chirinos. His 4 Seam has -8.91 vertical movement but in the Show the 4 seamers basically go straight and don't really have up or down movement. For a 4 Seamer, I look at the horizontal movement. If a 4 Seamer has more than 4 inches of vertical movement, I use a Running Fastball. Some others on the forum use 6 inches of horizontal movement for a running fastball, some don't use them at all so it's up to personal preference.
Chirinos has a Sinker that has -9.85 horizontal movement and 5.31 inches of vertical movement. Since a Sinker in the Show breaks straight down and not horizontal, I will use a 2 Seam fastball because it breaks down and across. If a Sinker has a lot more vertical than horizontal movement, I use a Sinker.
Sliders are tricky because I always felt they break too much in the show. Most Sliders break between 1-5 inches. If a Slider has a lot of break I usually will go with a Slurve. Sliders with 90 break don't seem realistic to me.
Chirinos Splitter has more horizontal break than vertical break. If that's the case, I will use a fork ball because it will break across and down where a Splitter will break straight down.
Everyone does their edits a little different. I get good results with my edits and I think they make the game more realistic when pitchers have the correct repertoire.
Hope this helps. Good Luck editing.