The phrase "along with a large group of" is correct and usable in written English.
It can be used to indicate that someone or something is included with a significant number of others in a particular context or situation.
Example: "The project was completed successfully, along with a large group of volunteers who dedicated their time and effort."
Alternatives: "together with a sizable number of" or "in conjunction with a significant group of".
To be clear: I, along with a large group of my associates, am acting alone.
Smoller said she was with Williams on the night of the accident along with a large group of friends, including Williams's hitting partner Sasha Bajin.
In the late seventies, the art collector Marcia Weisman, along with a large group of local artists, promoted the idea of a museum dedicated to contemporary art, and Broad, who had begun collecting, eventually joined the effort.
Three American evangelists who were detained in central China on Wednesday along with a large group of Chinese Christians were released on Friday, their pastor in California said, and today they were flying to Hong Kong.
There will be examples of his intimately awkward views -- in painting, sculpture, and drawing mediums like charcoal and pastel -- of women bathing, along with a large group of the small, beguilingly sympathetic monotypes that he made of women in brothels.
They are later reanimated in a secret Army project along with a large group of other previously dead soldiers and sent on a mission as GR operatives.
British Open champion David Duval and U.S. Open winner Retief Goosen, who were playing in the same threesome along with Woods, were in a large group of players at two under par.
Ion transporters were selectively expressed throughout ingrowth wall development along with organic nitrogen transporters and a large group of ABC transporters.
Completed in 1642, the year that Rembrandt turned 36 (he died in 1669), the painting depicts a large group of guardsmen, along with two women (or girls or dwarfs) and a dog.
And, somewhat belatedly, a large group of technology companies – along with several major business organizations – have written an open letter to the FCC, saying the two-tier proposals are dangerous to the future of the Internet.
As we walked, we crossed paths with other hikers: fellow Israelis, as well as Christian pilgrims from overseas, and a large group of Arab schoolchildren being shepherded along the route by their teachers.
