Here’s a list: https://www.reuters.com/world/middle-east/despite-bidens-doubts-humanitarian-agencies-consider-gaza-toll-reliable-2023-10-27/

I bolded them for you

U.N. and other international agencies say there can be small discrepancies between the final casualty numbers and those reported by the Gaza health ministry straight after attacks, but that they broadly trust them.

“We continue to include their data in our reporting and it is clearly sourced,” the U.N. Office for the Coordination of Humanitarian Affairs (OCHA) said in a statement to Reuters.

“It is nearly impossible at the moment to provide any UN verification on a day-to-day basis.”

Dr Mike Ryan, Executive Director of the Geneva-based World Health Organization’s Health Emergencies Programme, said last week figures released by both sides “may not be perfectly accurate on a minute-to-minute basis, but they grossly reflect the level of death and injury on both sides of that conflict.”

New York-based Human Rights Watch also says the casualty figures have generally been reliable, and that it has not found big discrepancies in its verification of past strikes on Gaza.

“It’s worth noting that the numbers that are coming out since October 7th are generally consistent or within logic for the scale of killings one would expect, given the intensity of bombardment in such a densely populated area,” Omar Shakir, Israel and Palestine Director at Human Rights Watch, said.

“Those numbers are in line with what one might expect, given what we’re seeing on the ground through testimony, through satellite imagery and otherwise,” he told Reuters.