Dodgy ones, both of these:
VP-BDS: The only Ekron I can find is a Turkish construction materials group - I'm not convinced. It seems that Austrian bizjet operators Avcon Jet may be involved too. They do claim to operate a C525, but not, apparently, this one. I've done both logos anyway.
N707EA is definitely a GLF4 operated by Emmanuel Aviation. I can't find anything about them, but I have read that it is owned by The Redeemed Christian Church of God, a Nigerian outfit with branches worldwide, including in the USA. In the lack of other evidence, I've done their logo.
And one from me with more certainty:
N705SG - C56X of KMR Aviation