After looking at the MP2467 datasheet I don't see anything that Murata could have done to change the current limit, so there OKI-78SR-5 should do at least 2.9A until it heats up and goes into thermal protection. Note the inductor will also saturate at high current flow so the switch (in the MP2467) may turn off from current limit after pushing the inductor into saturation, and that will make a lot of heat and trip the thermal protection.
I run a Pi Zero with an OKI-78SR-5 and it has run flawlessly for months now.
The price is out of my range but Murata also has a 78SR-5/2-C
https://www.digikey.com/product-detail/en/murata-power-solutions-inc/78SR-5-2-C/811-1119-ND/1926162
They also show a 78SR-5.2/2-C in the datasheet, but it is not at Digikey yet.