Many of ya'll have commented on the many episcopal lineages that end with Cardinal Rebiba. Charles Bransom has written on the topic here.
Just to give you an idea of how prevalent Rebiba descendants are:
The last 24 Popes (including both now living) are Rebiban. The last non-Rebiban was Pope Innocent XII who died in 1700.
Of the top 20 bishops in my databases by the number of bishops they consecrated (63 or more), all but 1 is Rebiban. The exception is Joaquín Fernández Cardinal de Portocarrero Mendoza who consecrated 64 bishops and died in 1760.
If you expand that to all bishops that consecrated 36 or more bishops - 50 in total - 42 are Rebiban.
95%+ of living bishops are descended from Cardinal Rebiba.