The organization of the chart is very difficult to navigate. I recommend removing all the data for people that didn't get accepted into a top-20 school, since the overwhelming majority of people in here are looking for stats on transferring to a top-20 school.
Also, I would organize this into two different charts: (1) Those that transferred from T14 schools to SLS, HLS, and YLS; and (2) those from non-T14 schools that transferred to top 20 schools (including SLS, HLS, and YLS--it happens). You could also add a third chart that showed people that transferred between T14 schools. For those that are looking to stay at a competitively ranked school but move to a different market. Such as someone transferring from Stanford to HLS or YLS, or someone from Georgetown transferring to NYU/CLS.
Basically, so that people at certain schools can more easily find what their current situation is, and what people with similar stats transferred to what schools.