I don't watch BKFC regularly, but I imagine that most guys there are killers since the stakes are naturally higher due to the no ounce gloves
Speaking of killers, the bantamweight division is super stacked. I'd watch someone like O'Malley, Garbrandt, or Sandhagen over any heavyweight any day of the week.
Let's not forget all the Contender Series dudes who managed to make it into the big show. Kyler Philips, Dan Ige, Sodiq Yusuff, and Phil Hawes are noteworthy examples
Oh, and one final thing: who do you think Chandler should fight first? I'm going with Hooker; it will be interesting to see how someone like Chandler will deal with someone with many ranged weapons in their arsenal. Him vs. Poirier is good as well, but it's too early for him to get that right now