if you have an argent, you can amass an army of wolves, sabers and anything up to a parasaur in size. That said, What you can tame can also vary depending on your biggest flyer.
What you'll most likely wanna do is go through the Kibble tree, from the bottom to the tippy top. Some are 'passive' tames, and passive taming is broken and incredibly irritating to many players but the Lystro, Diplo, and maybe the lil monkey, are the easiest Passive tames, though the key to taming the diplo and monkey is to make sure they aren't aware of your prescense(the lystro doesn't care), Ghillie suit allows you to just about touch them. Some dinos lose torpor at an annoying quicker then normal rate, starting at Spino, then Galli, the compy and don't even get me STARTED on Dimetrodon.
Each dino is already somewhat unique, or atleast alot of them are, some dinos have higher torpor then health so knocking them out might be harder, like the Penguin.