Yes I believe there is one out there which does/did runs rail tours. Although the exact one is represented.
IIRC yes, it is supposed to be there because they were there in real life. Not sure if the livery is correct. It was explained in one of the DTG streams, probably the route preview stream.
It's very loosely realistic. There is one former Class 47 that was exported to Europe that has been used on a railtour on the Semmeringbahn at least once. It is substantially different from the BR Blue 47 that is used in the timetable.
The railtour in TSW is loosely based on a real Class 47 which is based in Hungary which has run on Semmering in the past. (Not my pic, but it is the 47 in question on the route in real life).
No idea who the photographer is. The Cuban 47s were made almost in secret because of the awkward relationship between the US and Cuba at the time. It's shocking that they exist. Here's one that's seen better days. Again I have no idea who the photographer is but based on the metadata it was taken in 2012. It reminds me a bit of the Class 151 which was only scrapped in the early 2000s, and the HS4000 Kestrel which was left to rot somewhere in the Soviet Union. A photograph of that, if it exists, must be a holy grail photograph.
A very sad end, I'm old enough to have seen her IRL at York station - a beautiful engine, and could out-perform a Deltic with ease. Only ran on British rails for 3 years.
It is actually quite magnificent, just found it in the Timetable. Cold have done with another two or three coaches adding as I'm finding it can get up even the steepest sections at 60 or 70 km/h nowhere near throttle. Of course it would have been cool to have a 218 run in the timetable too. Makes me wonder what haulage "Easter Eggs" Mittenwald might have for us!