My own Godzilla Timeline Lore #3:
Cadborosaurus first seen by native Americans.

1608: Champ Lake monster first spotted

18??: Daimajin awakens.

1933: Western film crew arrives on Skull Island.

1942: Sky Serpent attacks a village in Nambia.

1945: Monarch created to track Shinomura & Godzilla.
1954: Gojira,

1955:Snowman

1955:Rodans attack Japan & feed on Meganulon.

1958: The H-Man

1961: Mothra attacks Rolisca

1963: Dogora attacks England

1963: Matango

1964: Oodako kills Frankenstein, Mothra & Larvas Vs Gomess. King Ghidorah’s meteor crashes in Antarctica, and he soon awakens. He’s thwarted off Earth by Godzilla 2, Rodan & Mothra (after Godzilla and him fall into the ocean, only Ghidorah reemerges and Godzilla is assumed dead), but Ghidorah’s mere presence destabilizes the world ecosystem, catylizing the emergence of kaiju & megafauna for the decades to come. Hook Island Sea monster found.

1965: War of the Gargantuas, Gamera The Invincible

1966: Ultra Q: (Gomess, Litra, Namegon, Juran, Penguila, Otohime, Mongular, Tarantula, M1, Balloonga, Kanegon, Cicada Man, The 1/8 Humans, Kemur Man, Dragon, Clapton, Bostang, Alien Ruperts, Sudar, Giga, Lily, Peter, Todora, The Train In The Vary Dimension.)

Ultraman (Series Showrun) (Bemular, Baltan, Neronga, Greenmons, Gesura, Antlar, Chandlar, Magikarp, Pigmon, Red King, Sunflan, Habitat, Jirass, Gango, Dodongo, Mummy Man, Pestar, Gamakujira, Gavadan, Baltan 2, Bulton, Zara, Banillaboras, Kemular, Underground People, Gubila, Dorako, Guigas, Gomora, Dada, Goldon, The Wolfman, Keronia, Baltan 3, Kemur 2, Zarab 2, Giant Fuji, Mephlias, Skydon, Pigmon, Seabozu, Zaragas, Geronimon, Saigo, Kiyla & Zetton)

Gamera Vs Barugon: War of the Monsters.

1967: King Kong Escapes, captured by Dr.Who & converted permanently into Mechani-Kong

1967: Kamacuras & Kumonga found on Sollogel Island. Kamacuras eat Minilla’s egg. Guilala attacks Korea. Eleking appears

1968: Latitude Zero. Alien Metron, King Joe, Gandar, Dinosaur Tank & Pandon defeated by Ultraseven.

1970: Space Amoeba

1971: Hitodah discovered.

1972: Anguirus defeats Nebulan invader Gigan, Kingsaurus appears.

1972: Daigoro Vs Redmoon. Loveland Frog sighted.

1973: Axor killed by Gamera, Kong 2 Skull Island Skullcrawler outbreak, Zone Fighter (Jikiro, Dorora, w/ Mothra Vs Wargilar, Spyler, King Ghidorah, Zone Angel, Garoga Spider, Garoga Gorilla, Barakidon, Zandora, Moguranda, Balgaras, Gandarguirus, Needlar, Megalon, Kabutogira, Grotogauros)

1974: Zone Fighter & King Caesar Vs Fake Godzilla, Doragory kills Zone Fighter.

1975: Titanosaurus discovered.

1984: The Return of Godzilla.

1987: Soran, Inagos, and Kamerus appear
1989: Biollante is created. Defeated & destroyed by Godzilla who is made dormant by ANEB.

1990: Gunhead

1991: Asuka Fortress created.

1992: Bagan Vs Mothra & Battra

1993: Rodan 2 discovered.

1994: The Gryphon attacks America.

1995: Gamera Guardian of the Universe, Destoroyah Crawling Forms attack laboratory. Chupacabras filmed in Puerto Rico.

1996: Garu Garu discovered

1997: Balkzardan appears

1998: Zilla attacks New York. Is destroyed. Offspring swims to Australia. The US military, a young Zilla and HEAT Team counter several new mutations & threats; Crustaceous Rex, El Gusano, Cameron Winter’s CyberFlies, Giant Rats, Cryptocleidus, Kilaakeons, Giant Bees, Ice Boarers, King Cobra Vs Mechani-Kong.

A new continent emerges in the Pacific where Godzilla, Manda & Varan settle.

1999: Gamera destroys Iris, Kilaakeon aliens control Godzilla, Rodan, Mothra, Daigoro, Anguirus, Gomora, Gorosaurus, Kumonga, Titanosaurus, Kamacuras & King Ghidorah for worldwide invasion. Only Godzilla, Mothra, Anguirus & Rodan survive.

2000: Gamera 4 Truth: Gamera fights off the White Gyaos ,Gamera 2000: Gamera destroys Mecha Gyaos, Neo Gyaos & Godzilla destroys G Bionic Gyaos, Godzilla 2000, Zilla destroys Megaguirus.
The Mysterians invade the Earth. HEAT stops the DRAGMA & SCALE.

2001: Godzilla Vs Varan, Anguirus & Baragon, Godzilla Vs M, Godzilla Vs Kamacuras. The US creates Ts-EH-Go. The US kills a giant human in Afghanistan.

2002: Godzilla Vs Bagorah, Godzilla Vs Cyber-Saur. Ningen creatures discovered in Antarctica.

2003: Kamoebas 2 killed by Godzilla.

2004: Gorath & Atragon (instead of FW).

Godzilla attacks in 07, 09(Ichiro Mizuki becomes Raban) & 2011.

2011: 18.12 GM Creature discovered in the US.

2012: Deathla attacks LA. A giant eel eats a dog in a Spanish lake. Human-Octopus baby found in India.

2013: Human Hybrid roams the streets of Madras.

2014: MUTOs attack West Coast. Godzilla kills them and months later, MUTO Prime. Godzilla defeats Yamata No Orochi.

2015: Gamera Vs Gyaos, Ebirah/Red Bamboo Base Discovered & Destroyed.

2016:Deathla’s Return, frozen in Tokyo.

2018: Dagarah ruins Australia,Jet Jaguar created.

2019: Scientific tampering with King Ghidorah’s brain awakens several titans. Scylla attacks Phoenix, Mokele M’bembe attacks The Congo & Godzilla destroys Castle Bravo Monarch Base. Mothra defeats Dagarah.

2020: King Kong kills Camazotz. Behemoth arrises.

2021: Gamera destroys Hedorah. Godzilla attacks Japan as Gyaos swarms emerge worldwide. Salunga attacks India. Jet Jaguar kills Anguirus & Kamanga.

2022: Hollow Earth discovered, Godzilla defeats King Kong. Kong becomes king of Hollow Earth. Kong defeats Organic Gigan base creature in Hollow Earth.

2023: Mechagodzilla 2 defeats Godzilla.

2024: Mechagodzilla goes rogue, destroyed by Godzilla, King Kong & Mothra. Collapse of the United States. EU occupation begins.

2025: Gamera defeats Godzilla.

2026: Zigra discovered

2027: Gamera defeats the Legion on the Viras homeworld. Zone Fighter Jr & Gamera battle Guiron & Zigra in South Korea.

2028: Hedorah returns, defeats Godzilla, Anguirus, Rodan, Behemoth, Tiamat & Zone Fighter Jr. Destroyed by Gamera.

2029: Mecha King Ghidorah created, defeated by Zone Fighter Jr.

2030: Bemular returns, stopped by New Ultraman.

2031: World War 3 starts.

2032: Ultraman defeats Baltan 4,

2033:Greater Kong & its followers ready for war with the surface world (with Behemoths & Mega Gojiras). Godzilla & King Kong stop the rogues. King Kong, Skullcrawlers & Warbats battle Godzilla & Rodan. Kong drives Godzilla out of Hollow Earth.

2034: Shinomura battles Godzilla.

2035: World War 3 Ends.

2036: Destoroyah kills most monsters except Godzilla Jr, Kong, Zone Angel & Behemoth. Is destroyed by Godzilla.

2037: The Vortaak take over Earth

2038: Gigan 2 created.

2039: The Xilieans & Humans liberate Earth.

2040: Bagan battles Mothra, Toto, Zilla, Mechani-Kong, Ultraman, Zone Angel & Behemoth.

2041: The Garoga Aliens destroy Planet X

2042: Godzilla destroys Hell. Bagan destroys New US & EU.

2044: Super Godzilla emerges & defeats Bagan.

2047: Ultraman defeats Godzilla.

2048: Ultraman defeats Godzilla a second time, Zone Fighter convinces the warrior of light to spare the reborn Gojira.

2049: World War 4 starts

2054: Godzilla, Gamera & Gigan defend the Japanese islands.

2056: World War 4 Ends

2080: Gamera self destructs to destroy the invading Zannon spaceship.

2099: Monster Island is made fully functional.

2100: 17 new United Earth bases on the Moon.