Effective access for a group is blocked but user inside the group has Modify permissions

Question

I have started a new job and I am looking at permissions on the file shares. I have noticed the groups have no effective access but the users in the group does. My understanding of effective access is it is the total permissions that the user may have from all groups that have access to the folder/file share. I also had an understanding that if a user was in a group the group set the permissions. Those permissions were passed along to the user in the group. This setup is completely the reverse of that.

This is the group on the left and the user AD groups they are a part of on the right

This is the groups effective permissions on the shared folder, which the user owns

This is the user’s effective access to the same shared folder

Can someone please explain this and how would you apply the permissions to the user but not the group?