Which titles from bestiary categories are the easiest to do?

Question

As the topic, I wanna know the 5 easiest class of bestiary to finish to get titles for characters lvls 250 like me.

Ty.

Comments

5 is to hard, because mammal have many easy monsters but yeti, magical - panther...

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Tynusiiaa, thanks you, those you send are good to start

Answer 1

 For me the easiest are: Amphibic, Lycanthrope, Bird, Fey and maybe Plant? 

it's hard to make a selection because not all monsters we see every day and require to kill a lot.