Four 19-year-olds and a youth have changed their pleas during a trial at Wolverhampton Crown Court.
The attack which left Watford fan Nic Cruwys in a deep coma following a match at Wolverhampton Wanderers on 7 March 2015.
The five, and another teenager previously admitted grievous bodily harm, will be sentenced on 9 September.
Daniel Lloyd, of Longfellow Road, Dudley; Joseph Lister, of Palmer Close, Wednesfield and a 15-year-old, who cannot be named due to being a minor, admitted grievous bodily harm.
Robert Beech, of Springfield Road, Wednesfield, admitted threatening behaviour, while Ryan Meer, of Watling Street, Gailey, Staffordshire, pleaded guilty to affray by threatening behaviour.
All five were acquitted of causing GBH "grievous bodily harm with intent" following a trial which lasted almost two weeks.
Mr Cruwys suffered serious brain injuries and was in a coma for three months following the "unprovoked violent attack", the trial heard.
He had travelled by train with friends to watch the match, which ended in a 2-2 draw.
The attack happened as they made their way back to the city's train station and planned to visit a pub for a drink.
David Lee, prosecuting, described it as "an unprovoked group attack", adding the defendants were "going in a gang to that area to look for trouble, which they found and caused".
The court heard Mr Cruwys continues to receive treatment for his injuries.
In a statement his family said they hope the verdicts "reflect the injuries Nic suffered and our family's pain and suffering".
"Although Nic will never fully recover, we are now hoping to try to move on with our lives and try to put the horrific situation behind us," they said.