I am not so sure they are all that similar. I see one with 2 tablespoons of sugar, one with THREE POUNDS OF SUGAR. Seems to me that would change things a little.
Any way here is another one from my files.
1 each big jar of mustard [1 ½ pound]
1 cup mayonnaise
½ cup ketchup
3 tablespoons Worcestershire Sauce
2 tablespoons brown sugar
1 teaspoon Tabasco sauce
¼ teaspoon black pepper
¼ teaspoon cayenne pepper
1 teaspoon kosher salt
1 stick butter
½ cup water
Put everything in a pot and bring to a boil. Reduce heat and cook uncovered for about 10 minutes or so, till everything is combined.