On my super league i made for FM23, i had a cup format with a bigger group stage of 8 teams with all playing each other once then top four go through to a standard format tot he final
also in the same database had a one off game at the start of the season as a first round with the winner gettng a huge 60m pay out, then going into a 4 team group stage with teams playing each other twice then going into a knockout satyle up to the semi final which was actually another seperate group of four in a world cup style group with three games each with the top two going through to the final in an end of the season showdown
Also the league system had 4 seperate leagues with the top 5 going through to the Champions Playoff in a tournament at the end of the season with the winner being crowned overall winner, is a really fun style database