Reasoning:

Kings - The kings need a point guard (ironic lol) and Reaves would be great, also is cheaper than other point guards they might target like garland or trae.

Lakers - This trade gets them 3 young players that can be on the team for a while. Kessler and Ellis are great defenders and will fit great with Luka and bron, kj is a good athlete that can come of the bench for LA

Jazz - They get 2 FRP that they want for Kessler plus a good young player