Geralt of Rivia ventured solo. The Warden/Hawke/The Inquistor were all a part of a four member party. The Arisen and his/her pawn could be accompanied by two hirelings.
Basically in other games, four member groups is what I am most familiar with, so I can't imagine what a party of six would be like. So to Larian as a new player of Baldur's Gate games on Stadia ...... I would certainly like to find out how a party of six felt?
“This year the utopian candy shell has melted away to expose a hard center of bizarre reality.”