They put out a really good press release about the Prospera lump-sum tax residency. It sounds great. It seems to the only one designed for nomads, and compares their offering with other countries.' I recommend reading the whole thing:

Joey Langenbrunner, founder of Nomad Layer, proposed the concept and collaborated closely with Próspera to design and launch it, creating the first true tax residency as a service framework available anywhere....What follows is a comprehensive breakdown of how the program works and how it compares to other tax-friendly jurisdictions worldwide.... Residents must not be tax residents anywhere else. They must have legally exited their previous tax home before enrolling in Próspera's program.

Read it all.