Jesus said it best, ALL sin WILL be forgiven
He does not separate sin, because scripture states the penalty of ALL sin is death.
People focus on some sins to make themselves look batter, because they have not understood how sinfull they really are and are not secure in christ, so they need to find hope, their hope is that they are not a bad as a sinner as these people.
Its a sign of legalism, we see it in the jews, we see it in much of the church. Same tactic of satan