The Southern Belle paint on the former KCS is one of the most appealing to me of any modern schemes. The new CPKC red/black/white is really drab in comparison. I also love any Heritage painted units and have seen quite a few from both Norfolk Southern and CSX. I railfan locally and have both Class 1s in my area, including a few places where they are within 100 feet of one another. I used to pass the time on night shift watching the Genesee and Wyoming owned Carolina Piedmont switch cars along the businesses in my town. Made friends with all the conductors and engineers on the night crews and learned quite a bit about local railroading from them.
If you have an interest, some of my favorite YouTubers that I watch religiously, are Danny Harmon of Distant Signal Productions, and Christian Martinez of MultiColor Films. Christian's buddy Dakota Lovern does Sunshine State Rails as Kotabeaner, along with working at the Florida Railroad Museum and makes a great railfan video too. I learned way more than I ever needed to about Florida's Bone Valley operations watching his videos. All are Central Florida based and I have been to almost every place they film as I have relatives in that part of the Sunshine State.