We have PCTs. They don't pass meds. There are however specially trained techs outside of hospitals and nursing homes and rehab facilities, for example in a group home for the mentally challenged that can pass meds.
At our hospital they have the three levels you describe. The 3rd level can do trach care, suction trachs, EKGs, start IVs (which is a big controversy at our hospital, "can they flush the IVs or not?", "I'll start my own IVs, I'm not risking my license, blah blah, blah), foleys, admininister 2liters of 02 and do incentive spirometry.
There are very few Level 3's right now. Our educator on the floor I just transferred to refuses to teach PCTs how to start IVs, I'm not sure why, just something I've heard.
They do get paid for skills, so the more they do, the more they make.
The post below reminded me, our can do foleys insertion and d/cing as well as enemas.