Comprehensive resource on diazo coupling?
If you prefer books as secondary reference, the The chemistry of diazonium and diazo groups in the Patai series (back 1978) may be one source.  More recently, the two books about diazochemistry by Zollinger, 1994 here and here.

Maybe not as comprehensive as the two sources above, but offering an overview are Merino's critical review about diazocoupling reactions in Chem. Soc. Rev. (doi 10.1039/C0CS00183J) in 2011, and Oger's overview about their application in flow chemistry in Organic Chemistry Frontiers (doi 10.1039/C5QO00037H) in 2015.