I am glad that this forum exists, otherwise I would have had no idea what the theme was, and would have been unable to solve this one. It was also a bit of an education looking up the “numbers”. The word numbers and the multipliers threw me off- I was looking for a more mathematical theme...
A plethora of similar indicators that I don’t have a name for but always enjoy in crosswords:
Scorer, winger, blazer, writer, pointers, 2d
Those “how to solve cryptic crosswords” pieces often mention these, and I guess they are a bit of a trope. I have come across them often, and always enjoy the mis-direct and humour in them, but have never quite seen this many in one crossword before.