And, you're right--it's not hard to make any of these. My takes me 10-15 minutes to put together, including time to track it all down. Make them all and see what you like.
If you're familiar with St. Louis style BBQ (my wife is from there), they use a thinner sauce with a slightly different flavor. The big name sauce out there is Maull's. I've made a Maull's knock-off too that is pretty good, and I used that for pork steaks.