Did a quick look on Wiki and came up with this.
NY, Chicago and Toronto's lists on Wiki dont go below 500-550' but I think we all know they have the most overall.
Otherwise it seems Miami and Vegas went bonkers
No. of buildings 400 feet tall or taller:
Miami 89
San Francisco 54
Houston 49
Las Vegas 44
Los Angeles 41
Atlanta 39
Seattle 39
Calgary 38
Boston 31
Philadelphia 31
Dallas 30
Montreal 30
Vancouver 22
Minneapolis 19
Denver 17
Pittsburgh 16
San Diego 16
Charlotte 15
Austin 14
Detroit 14
Honolulu 13
New Orleans 13
Cleveland 10
Columbus 10
Nashville 8
Baltimore 7
Tampa 7
Milwaukee 6
Fort Worth 6
Indianapolis 6
Portland 5
St Louis 5
San Antonio 5
Jacksonville 5
Louisville 4
Orlando 4
Memphis 3
Phoenix 2
Albuquerque 0
El Paso 0
San Jose 0
Tucson 0
Washington DC 0
No. of buildings 400 feet tall or taller built since 2000:
Miami +69
Las Vegas +35
Atlanta +19
Seattle +19
Calgary +16
San Francisco +16
Austin +13
Houston +13
Boston +9
Montreal +9
San Diego +9
Charlotte +8
Philadelphia +8
Los Angeles +7
Honolulu +6
Minneapolis +5
Denver +4
Nashville +3
Dallas +2
Milwaukee +2
Baltimore +1
Cleveland +1
Fort Worth +1
Jacksonville +1
Orlando +1
Pittsburgh +1
Portland +1
St Louis +1
San Antonio +1
Tampa +1
Columbus +0
Detroit +0
El Paso +0
Indianapolis +0
Louisville +0
Memphis +0
New Orleans +0
Phoenix +0
Albuquerque +0
San Jose +0
Tucson +0
Washington DC +0