Returned a car I picked up from LAX today around 6PM, walked through the National row on the way out. There were spaces marked Executive and Emerald, though I don't know if you get to pick yourself like you do at larger locations. FWIW, I was impressed with the selection given the fleet size-
Exec-
Sonata
Taurus (Limited Trim)
Buick Enclave
Emerald-
Impalas
300 (Base trim)
Other-
Terrain
Cad. SUV
Cad. Sedan
200 conv
Impala
Altima
Dodge minivan
Plus the nice Genesis I just returned.