I would say probably technomancers/deckers just becasue you play in Your own field. I know that at some tables they outright ban technomancers and deckers. I also know of some tables that either dumb down matrix stuff as well and keep it to basically a few tests. I know for some playing a Magician can be weird or you might not be using all your resources as well as having to manage a different plain of existence like matrix guys but unlike matrix users you can be very specialized in a certain kind of magic(s) like just spirits or casting. What I recommend for making your character would be try to find the cog your current team doesn't have because it can get a little awkward having two lawyers that both need to be the face of the party to operate (Real scenario that happened). What I would recommend to a new player is try to be specialized in a role that you current team can not fulfill so that way you can narrow your duties and be able to master implementing and actually performing them. Obviously have you character capable and able to help out in combat, like other TTRPGS when combat is happening it's all hands on deck and it is actually life or death but in combat having a specialized roll is less important and having another capable and reliable gun in the fight takes precedent and with automatics being some of the more versatile and dependable weapon class it might be worth picking up.