A few suggestions for future DLC for the upcoming Cathcart Circle Line route which should fit the reflected period... Class 320 Class 380 Class 385 All have been used on the route in recent years.
If it's 2011 the top two trains makes sense because 8 December 2010 Class 380 inaugural run on Scotrail if it's 2019 right up to the start of the coronavirus pandemic in the United Kingdom all three trains can work
Apparently the route is set in ~2014 - So i've been told continuously by people anyway- So it's safe to rule the 385 out. The 320 and 380 would be the 2 contenders.
During the time period the route is set the only other semi-regular runners on the route were 380s and 318s. 320s were a really rare appearance from what I can find online and only started running the line more frequently in the last couple of years