There’s no standard answer to this question. It depends on what is there. If there are hardwood sprouts then you better add something more than gly cause it won’t get them. Gly plus Triclopyr would likely yield the best results if you plan on killing the hardwoods and planting it next year. You’ll still likely get some stump sprouting next year.
This.
It also depends on what species are in or near the area that you want to keep, such as desirable hardwoods.
