Monsterverse Titan List.

G theorist

Titanus-Gojira

Known individuals:

Godzilla(alive)

Dagon(deceased. Killed by M.U.T.O. Prime)

Titanus-kong

Known individuals:

Kong(alive)

?

Unknown Kong family(not much is known about these individuals, they are likely deceased. Killed by either Titanus Gojira species or skullcrawlers.)

Titanus muto

Known Individuals:

male M.U.T.O.(deceased. Killed by Godzilla)

Female M.U.T.O.(deceased. Killed by Godzilla)

M.U.T.O. queen(unconfirmed, though likely alive)

M.U.T.O. eggs(deceased. Killed by Ford Brody). No I will NOT classify each egg as its own individual >:(

Titanus Jinshin-Muchi (deceased. Killed by Godzilla)

Note: Though this creature is very closely related to Titanus muto, it is still classified as a Separate species 

Titanus Ghidorah 

Known individuals:

King Ghidorah(Deceased. Main body killed by Godzilla)

Mechagodzilla(deceased. Initially killed by Godzilla, later disabled by Kong.)

Note: though this creature doesn't take the usual appearance of Titanus Ghidorah, Mechagodzilla has the mind of a member of its species.

Titanus Mosura. (Deceased. Killed by King Ghidorah)

Note: Only one individual of this species is currently known

"Mothra"

Titanus Rodan

Note: Only one individual is known at this time

"Rodan" or "Radon"

Titanus Cranium Replant

Known individuals:

Camera flash skullcrawler(deceased. Killed by Manson Weaver)

The big one(deceased. Killed by Kong) Note: This skullcrawler is believed to be responsible for the killing of most of the Titanus Kong species.

number 10(deceased. Killed by Mechagodzilla)

Unknown species:

Note: There are no noteworthy individuals of the following species.

"Warbat"

Unidentified Hollow earth lizard

unidentified Hollow earth Bug

Unidentified hollow earth creature

Note: due to its surroundings and general skull shape. This creature is likely a member/ a variant of Titanus Gojira.

"Hell hawks"

If I missed anything, let me know below so I can add update the list. 

Xenotaris

well for english wikis there is Gojipedia and Wikizilla