This is an EXTREMELY loose assessment and criteria but I've gone back to look at summers in which we were transitioning from La Nina to EL Nino. I just solely used the Ensemble ONI. Again...just very basic assessment with one strict criteria.
List of years:
1904, 1911, 1918, 1925, 1951, 1957, 1965, 1972, 1976, 2006, 2018
Avg. # of named storms: 8.55
Avg. # of hurricanes: 4.45
Avg. # of major's: 1.18
If doing from 1965-on
Avg. # of named storms: 10.4
Avg. # of hurricanes: 5.20
Avg. # of major's: 1.40