I think I could share something here too from my site:
https://sites.google.com/view/dxgsmugensite/characters
This contains my version of Giga Bowser, a boss character with a moveset inspired from the Smash series (also with sprites from a certain spritesheet because I had a feeling that the custom-made sprites from me for him would look horrible). Some of the moves function similar to Bowser's ones in Smash - Up Shell works similar to up smash, while Giga Punch was inspired from Bowser's Final Smash from Ultimate, though his Specials have variations where the stronger ones make Giga jump higher (in case of Up Shell) or jump and fall faster (in case of Giga Drop, based on Bowser's down special).
Also, the stages category contains two of my first stages (which were made to try making stages) - Melee Battlefield and Final Destination (the latter from Smash 64).