So, rather low activity from my side lately, mostly due to trying to do many things combined with limited time!
But, I have been playing around with signals and signalboxes and painted a bunch of signal boxes which I think did come out rather OK.
However, the quite advanced signalling of Exp..Extended gives some challenges as how to present the different types of signals, and I have been thinking a big chunk on it recently.
This is the approach I think I will do:

The system being this:
*nothing* = what you would expect it to be, that is track circuit block signals
ABS (absent for the moment) = Absolute Block. The sign shares the colors from the absolute block semaphores (completely fictive sign)
TOK = Token. The sign is used on all token block signals, hopefully feeling consistent. (existing sign, with a slightly different meaning)
ATC = Cab signal (ATC=Automatic Train Control). (existing sign, also with a slightly different meaning)
ATC/TOK = is in fact just a normal token block signal, despite being hinted as a cab signal. Reasons for its existence is the speed limit and consistence
Something I was considering was to add a small square yellow sign on the choose signals. That would then stack with the other signs, so an absolute choose signal would have both the square and the absolute block sign.
I also wondered about the need to specify choose signals in their icons, ie with "CHO". I have not done this yet, as this would affect all choose signals and might state the obvious.
The signals will obviously not all be available at once. Different signal boxes will only hold something like two different kinds at once (ie track circuit block signals and "TOK", or "ABS" and" TOK")
I know the Czech pakset uses a combination of a number and a letter, but I dont remember if it is finnish or not. I also dont know if the graphics on the map will be different as well.
The Brittish pakset dont have anything on the icon of the signal, and the signals themself are not different (example: absolute block and track circuit block daylight signals).
Do you think this is a clear separation of the signals? Do you have any comments or would you propose any change?