Wapinter shouldn't be on that list because most of his projects are all failure and scams, all my respect goes to bubbalex who carefully select his bounties looking at the team and their utilities, not all bounty managers are capable of this, also Irfan Pak stands out among the other scam projects do comes from him as well but those are projects that looks neat before turning scam out of the blue.
As I know bubbalex is no longer a bounty manager but in the past top projects. Over the past year, the bounty managers from whom I received real rewards are CryptopreneurBrainboss Hhampuz Arteezy and also SmallRabbit sadly recognized him as a scammer and he ceased his activities.