What is required to create a separate sub-category for pets?

[Paladance]

e.g. [url=https://www.warcraftpets.com/wow-pets/aquatic/frogs-and-toads/]Frogs and Toads[/url]

I see that there are groups with 3 representatives, such as [url=https://www.warcraftpets.com/wow-pets/aquatic/penguins]penguins[/url] or [url=https://www.warcraftpets.com/wow-pets/aquatic/jellyfish]jellyfish[/url]. However, there are no groups for goren and wyrmtongues, that come in a two/three of each, yet -- they are currently put in humanoid Misc.
Maybe a time for these?

Also, come 7.3, [pet]Sun Darter Hatchling[/pet] will be fixed and become a Dragonkin -- it would be an opportunity to create Fey dragons category grouping it with two elder siblings.

Most of Mech Misc = Vehicles perhaps?

I wonder what about enchanted items -- there are several of them, but as lanterns and books have a separate category, the other ones (pen, broom, etc.) are put in Misc aswell.

(Feel free to suggest more groups here if you happen to find a potential for them, even much later! )

E: wrong link

[Quintessence]

We normally wait for at least 3 pets to fit a sub-category before creating a new one.

Looks like the Wyrmtongue (and Fey Dragon come 7.3) fit but there are still only two Goren.

[Paladance]

There are actually some duets, such as [url=https://www.warcraftpets.com/wow-pets/magic/wisps]wisps[/url], but I don't insist.
That's all I need to know, thank you.

(Found yet another triplet -- hydras! [Aquatic])