I will chose https://flyp.me/en/api/ they have small volumes and clear KYC and a license in Luxembourg, which I do not think they will implementing kyc, because the laws in Luxembourg are not strict. you can find them address easy.

CoinSwitch looks very similar to Challengy, and Godex.io does not seem to have a strict privacy page. they support Monero without KYC which is a red flag in the future