The Ricketts family, owners of the Chicago Cubs, a consortium led by British property investor Nick Candy and others featuring Sebastian Coe and LA Dodgers part-owner Todd Boehly's have all officially submitted their bids to buy Chelsea.
New York bank Raine had set the deadline amid frenzied interest in the sale of the Blues.
Cubs chairman Tom Ricketts has partnered with US hedge fund chief Ken Griffin on a potent submission, centred around sports ownership expertise and major stadium redevelopment know-how.
Roman Abramovich put Chelsea up for sale on 2 March, amid Russia's invasion of Ukraine.
The 55-year-old was then sanctioned by the UK Government last week, after Downing Street claimed to have proved his links to Vladimir Putin.
Russian-Israeli billionaire Abramovich has always denied those links, but had already moved to sell Chelsea amid the major geopolitical shift.
Abramovich's UK assets are frozen by the UK Government but Downing Street has allowed Chelsea to continue operations under special licence.
The Blues are continuing to lobby for relaxations to that licence, but Raine Group is now expected to carry out a quick sale of the club.
The Ricketts' experience of steering the Cubs to the 2016 World Series title and also completing a major renovation of much-loved neighbourhood stadium Wrigley Field will bolster their bid.
Plans for the redevelopment of the Stamford Bridge ground will be central to the bidding process, with more than simply the highest offer being considered.
Los Angeles Dodgers part-owner Todd Boehly remains another front-runner, with the US magnate understood to have added California investment firm Clearlake to his consortium.
Nick Candy has pledged to "give football back to the fans" should he pull off his bid of more than £2billion to buy Chelsea.
The British property tycoon vowed to hand Chelsea fans the coveted 'golden share' ownership stake in the Stamford Bridge club.
Chelsea fan Candy issued a lengthy statement in confirming the submission of his bid, vowing to write off the loan to Chelsea Pitch Owners to safeguard the Blues' future at Stamford Bridge.
The 49-year-old has promised a total renovation of the stadium, where his property expertise could come to the fore.
Candy has teamed up with South Korean firms Hana Financial Group and C&P Sports Group in his Blue Football Consortium.
"Chelsea is one of the most iconic and successful professional football clubs in the world, with a rich heritage, global following, and a highly valuable brand," said Candy.
"Football clubs are vitally important community and cultural assets, and this is a once-in-a-lifetime opportunity to give football back to the fans and put them at the heart of the operations and strategy of a leading global football club.
"I believe Chelsea has all of the fundamentals to become the most valuable and respected sports club in the world and a force for the greater good in everything it does."
Martin Broughton, deputy chairman of International Airlines Group, along with World Athletics president and Chelsea Sebastian Coe beat the submission deadline.
Broughton and Coe's powerhouse British business experience and standing, coupled with financing from investment supremo Michael Klein, adds major weight to their candidacy.
London 2012 chief Coe branded Broughton "the right man to lead Chelsea Football Club into its next chapter" in throwing his weight behind the 74-year-old's candidacy on Wednesday.
