Some are named with their colour variant and some not, e.g. the Pink Rathian is named only Rathian. Infact, any that have a variant are the variant, even the Kushala Daora is the Rust variant.
Random NPCs: Trenya - Felyne being carried off by the Vespoid Queen Treasure Hunter guy on the back of the Yama Tsukami (Not sure if he gets a name) Felyne pushing the trolley are Guild Felynes (random info from Felyne Chiefs) Lass on the trolley stands in the Gathering Hall by the notice board Felyne in the cloak is the 6*+ Pokke Quest giver Guy sitting on the front off the trolley I have no idea...
if someone could find the updated version of this with the newer monsters (there is a small version on the MH wiki, but it doesnt have any info on where to find a big version.