Besides which, these organizations appear to be generic conservative advocacy groups. The money would be to support ALL of the conservative agenda of which climate science is one, probably fairly small, part.
Global warming fell apart as an issue not because of some conspiracy but because it was obviously an intellectually bankrupt enterprise that was torn apart by its own contradictions and falsehoods and by the excesses, distortions, and exaggerations of its advocates. No one is going to commit serious money to it now. It's dead as a driver of major policy change.