For me I value the wyvern over quetzal for cargo, we often use a wyvern with 2400 weight for our metal and stone runs, and just pick up the anky or doed with them, allows fast transportation and really solid material rate.
My main working dinos in no particularorder
Mantis for all around utility, espcially flint, thatch and sap
Ankylo for metal
Therizino for Berries, Fiber, Silk, Wood, Cactus Sap, Ect
Giga for meat
Wyvern for general combat mount, cargo, and drop hunter,
Mammoth for wood cargo, often have them following my mantis or therizino.
Doed for stone cargo
Golem for stone and sand gathering
Moschops for polymer, mushrooms and sap.
Quetzal for large transportation of dinos.
Paracer for mobile base/meat cooker.
Megatherium for insane chitin gathering when we need it.
Rex/Yuty For Bosses
Daedon for utility heal for breeding and boss healer
hyaenodon for spoilage helper.
Horse for mobile mortar, really handy making preserving salts on the go.
Wolves/Sabers for cave runs.
I dont have a water base currently, mostly living on scorched earth so dont have anything on the list for them yet. I still use allot of other dinos but these are the primary ones.