For slides, any slides rated at IS0 100 or below. (With exception to Fuji Astia, which is actually designed to be a portrait film).
For negatives, as mentioned Fuji NPC 160 and Kodak Portra 160VC are good and are widely used in commercial photography.
And depending on what you are intending to shoot, different brands of film have different spectrum enhancement for saturation. Fuji films typical has more enhanced saturation towards the blues and greens while Kodak films are generally warmer in the reds.
If you are not too concerned about wildly saturated colours, then Konica negative films have good saturations throughout the colour spectrum, but sometimes it feel a bit unnatural.
Konica Centuria 100 and Pro 160 are rich.
And amazingly, they have a ISO 50 negative film called Impresa 50 Pro that's quite amazing in the saturation. ( That is if you can find it here.)