There is a new ranking of business schools by EdUniversal.
Seven Irish institutes make it into the top 1000 (2 in the top 100, 4 in the top 700). The methodology is particularly vague, so I do not know what it means. The ranking is based on a composite of other rankings plus a survey among deans. It seems to be mostly about teaching quality.
Anyway, two Irish universities come out well, so that is good.