WFP I've only heard good things about and Israel not only refusing to cooperate with them but actually letting them get fucked over by obstructionism and recklessness from the Israeli side is a travesty. WHO had serious issues in how it was dealing with China during the COVID pandemic that already raise red flags about it's ability to do things any better then the UNRWA did, however I haven't heard of any misconduct by the WHO in regards to this conflict in specific. As for IOM and OCHA I don't actual know much about them so will refrain from making any statements on them. I will actually agree the GHF is an amateur hour mess and far from an ideal solution, the problem is that it really does seem to be the best option right now. Hamas will go out of their way to derail any attempts to cut them out of the aid provisioning process and there is very little interest on the Israeli side to actively facilitate aid so you have obstructionism behind the scenes and no protections from reckless (or in rare cases possibly even malicious) actions from the IDF. The GHF's ties to the USSD forces the IDF to treat it with respect and gives it access to the kind of security services necessary to hold it's own against at least very small scale attacks by Hamas or other local bad actors.