A small tweaking on trains.xml I did (Check the video to see more clearly what it is) . Now some trains will spawn in the same order as seen in some movies and other stuff:
-Under Siege 2: Dark Territory
-Grand Continental
-Nevada Petrol Express
-Atomic Train
-Unstoppable
-Fast And Furious (The train in the end)
-GTA San Andreas (freight with 4 flatcars)

You will NEED the following mods:
Overhauled Trains Mod:
https://www.gta5-hub.com/vehicles/overhauled-trains-lore-friendly-liveries

GTA SA Freight Train:
https://www.gta5-hub.com/vehicles/gta-san-andreas-freight-train-replace

Metro Locomotive:
https://www.gta5-hub.com/vehicles/metro-locomotive-2-0

Brown Streak Railroad Train:
https://www.gta5-hub.com/vehicles/brown-streak-railroad-train

Brown Streak:
https://www.gta5-hub.com/vehicles/brown-streak-add-on

I currently only have only done those. If you have any suggestions feel free to share.