deceased is fine and people have been using that, as well as their names. Defendants have their rights protected in their criminal cases, which will always put some limits on what the prosecutor can do or say. Defendants are given more scope as long its relevant - like the judge in Rittenhouse hadn't allowed criminal records, mental health etc as well, but the prosecutor may have let the door open to discussion of some of it now because he referred to some of it in his opening statement to make him more sympathetic, give a reasoning for him being there and less of a threat.
Edit: the first deceased- for example he was not able to stay at his girlfriend's house because she had a restraining order, and was carrying a bag of his clothes because he was discharged from a mental hospital that day.
I'd ignore what a lot of online sources are saying on this one. I hadn't known that the police were thanking Rittenhouse at the start of the night when he was providing medial assistance and handing out water, rather than the end until this trial. In actuality, when Rittenhouse got to the police to turn himself in the police they told him to back up and tried to pepperspray him.