Several ISA have subsets for instructions. Each subset is marked by the string name.
For example, in RISC-V architecture they are the following: A (atomic memory operation instructions), M (multiply\divide instructions), F (floating-point instructions), etc.
The ISA subset name can be associated with instruction somehow and can be printed in MicroTESK trace when the instruction is simulated.
The MicroTESK trace format even has the appropriate field for this information.