On that tangent: is there such a thing as a "dexterity-and-reflex-enhancing drug"? I don't think amphetamines do that, nor any nootropic I'm even vaguely aware of. "Focus" or "alertness" is one thing, but actually suddenly being better at competitive twitch games is quite another. Maybe an anxiolytic, actually—theanine?—if you wanted to prevent "yips." But otherwise...
The implications of testing for anabolic steroids for previously non-gender-segregated competition is worrying. Previously, a transitioning transgendered person could openly compete in an eSports tournament; steroid use was just irrelevant to what eSports measure.
I'm kind of surprised there isn't an exception for medically necessary use of substances on the list (at least, that I can find). Obviously, medically necessary drugs can still give you a advantage, but taking a substance your body would typically produce seems a reasonable exception. For example, trans men don't produce significant amounts of testosterone, so they need to take it both to transition and to be competitive.
That exception wouldn't technically cover trans women because we often take spironolactone to totally eliminate testosterone rather than because it's missing. Apparently, it's banned because it's used by athletes to hide their past usage of forbidden steroids.
Thanks for posting that! I should have mentioned in my previous comment that a medical exemption doesn't completely solve the problem — some trans people have issues getting hormones through a doctor and buy it without a prescription.
Amphetamine would work for this, increases cognitive control, reflexes and dexterity. It does have a lot of side effects of course and sometimes paradoxical effects.