For me, not really anyone (except Eastern Michigan of course). I rather dislike some programs like ND who feel they are exceptional, but really aren't. I wouldn't say I "loathe" Florida, but I do enjoy beating them, same with Auburn. I don't loathe Alabama even though they usually beat us. I probably used to loathe Texas back when they beat us often, that changed ....
Miami? Kinda, when they were the criminals I suppose, some.