While I am sure you have numbers supporting that you also have a much better idea of where the problem areas are here. Taking an example, UE/UC, that you've debated you really have to look at congressionally mandated budget, definitions and methodology that BLS has to work with to see why UE data doesn't smell right for higher levels of unemployment implicitly you have to propose alternative budget, definitions and methodology to really criticize it. The BLS is designed to be inexpensive and at least 90% accurate in the normal unemployment range of 4.5-8%. Outside of that range of course it is inaccurate, BLS data is not designed to be accurate outside of that range. What range do the CTs want to calibrate UE measurement to? These kinds of problems in figuring out how to fund UC the most common entitlement people use is multiplied by each entitlement in each country and you have to be intimately aware of context to figure out costs.
Just as with US numbers there is data lost in the footnotes, off the books and in different levels of government. In China and to a lesser extent Brazil and India the major entitlements are in construction and infrastructure. Brazil may not have ghost cities built on spec but they do have massive ghost industrial parks, I've talked to Brazilians who claim to have seen square miles of never used factories in Brazil's northeast. China is building high speed rail service from the coastal plains to the Tibetan plateau and the foot hills of the Tien Shen mountain ranges, not to mention granting access to the second most deadly desert in the world, the Tali Makin. 60% of China's GDP is officially construction and infrastructure projects but there are lots of indications such as subsidized gasoline prices that the costs of this jobs program is grossly understated and may exceed GDP. In India, if I understand the reports, the states are paying for wildcat road building and sending the bills to New Delhi but that is so bizarre I tend to dismiss it. Building four lane highways from Podunk to Dogpatch as the norm is really strange. But all of the above are entitlements to high paying jobs.