I'm not sure trans status is not allowed, but there are other descriptors police use. Race, age range, height, body type, hair color, clothing, distinctive features, known areas they frequent, possible aliases
@GuyWithOpinions ....wearing x,y,z..plus any distinguishingfeatures....driving/ riding x ....
There are plenty of times when gender is unknown...too dark to determine, coverings such as clothes/ disguise, etc. If the suspect presents as male or female that may be included.. 'presents-as' versus a definitive determination are two different things.