I focused on the OC, RT, and OT groups. Common sense suggests that the Obama-Trump group--people who voted for a Democrat once and a Republican once--will be in between the people who voted for a Democrat both times and a Republican both times. I looked at average opinions on a lot of issues and that is generally the case. However, there are some exceptions. There was one on which the OT group was more "Democratic" than the Democrats: spending on Social Security. With 1 meaning that spending should be increased, 1.5 that it should be kept the same, and 2 that it should be reduced, the average for OC voters was 1.19, RT was 1.28, and OT was 1.15.
There were a number for which the OT group was more "Republican" than the Republicans. Two involved spending: crime prevention (OT most favorable to more spending) and science and technology (OT least favorable to more spending). Four involved "feeling thermometers" about different groups: Jews, Asian-Americans, Hispanics, and Blacks. On all of these, OC was most favorable, and OT least favorable. Finally, on rating blacks has hard-working versus lazy, OT voters were more negative than RT.
The differences on spending for Social Security and crime are consistent with what Trump said in his campaign. He didn't say much about science and technology, but he certainly didn't give the impression that he was interested in spending more in that area.
The differences in the feeling thermometers are more puzzling. Trump talked a lot about illegal immigration, with an emphasis on Mexico, so lower ratings for Hispanics aren't surprising. However, he didn't say much about blacks, and what he said implied that conditions were the result of faulty government policy rather than the fault of blacks themselves. Some people said that he appealed to anti-Semitism, but I didn't find their examples convincing.* I don't recall that he said anything about Asian-Americans. A lot of people said that Trump appealed to ethnic prejudice of all kinds, and this might seem to support them. However, the pattern didn't show up on most issues related to race and ethnicity. For example, there was a feeling thermometer towards the Black Lives Matter movement. OC voters were 66, RT were 22, and OT voters were in between with 37. That is, it was only on the general ratings of groups that OT voters were more extreme.
My thought is that it has to do with what people now call "political correctness," or what used to be called "respectability": the things people know that they are supposed to think and say. The "respectable" position is that you should show positive feelings towards every ethnic and religious group that's part of the "American community." But there are some people who are are prejudiced or at least feel "I'll tolerate them, but don't tell me I have to like them." Trump was the first major party candidate in a long time who didn't care about being respectable, which would be appealing to people like that, apart from any specific statements or proposals.
*From Ian Buruma in the NY Times Magazine: "Incendiary references to a 'global power structure' that was robbing honest working people of their wealth were illustrated by pictures of George Soros, Janet Yellen and Lloyd Blankfein. Perhaps not every Trump supporter realized that all three are Jewish. But those who did cannot have missed the implications."