Stevia is best of the bad bunch but has a weird aftertaste. Xylitol is second. The rest are literally poison.
Sucralose (splenda) and Equal are the absolute worst and cause endocrine disruption among other things. Anyone with a cronic illness or below 21 should avoid any amount of these. So have in “moderation” at your own risk.
Unless you are diabetic it is much better to have actual sugar in moderation than any of these things. They are chemicals not food, at least sugar from sugar cane is actual food.