Which group, in your view, was more deeply religious, the Pilgrims or the Puritans?

It is hard to measure the level of religious devotion of any individual or religious group. This is true when comparing the Puritans and the Pilgrims of seventeenth-century North America. In fact, the beliefs of the two groups only differed slightly. The Pilgrims and Puritans both followed the teachings of John Calvin. Both were upset with the worldliness they saw in the Church of England. Both denominations sought to rid their churches of the remnants of Roman Catholicism that remained in the Anglican Church and adhered to a strict and literal interpretation of the Bible.
Where they differed is in the matter of degree in which they sought to distance themselves from the Church of England. Pilgrims, or Saints as they called themselves, separated entirely from local parishes and formed their own congregations. Puritans, on the other hand, stayed in the Church but attempted to cleanse it from within. Both groups were seen as a threat to the authority of the Church of England and therefore left for the relative safety of North America.
To leave the familiarity of England for the perceived wilderness of seventeenth-century North America was no small endeavor. The dangerous sea crossing aside, there were few familiar resources to be had in the New World, uncertain relations with native peoples, and a still tenuous relationship with their kinsmen in Europe. To leave for a new life in America could only take great determination and faith.
Once in the New World, both groups lived in highly devout communities. Nothing was considered secular, and religious ideology extended to all parts of life. In one aspect only could Puritans be considered more religious. They sought to extend their religious dominion over the entire land. Native peoples were to be pushed aside, and any act of heresy—both within the community and without—was swiftly and severely punished. In contrast, the Pilgrims were content to follow their way of life within their small community and leave others well enough alone. Whether or not this means the Puritans were more devout than the Pilgrims is not certain. Rather, I feel it is just a different mode of religious expression.
It really is hard to say whether one group was more deeply religious than the other. Both lived in communities in which religion extended to every corner of life. Laws were all biblically based, and political and religious leaders were inextricably entangled. Their dogmas were very similar and closely tied to biblical literalism. It is likely that Pilgrims and Puritans would have recognized this similar level of devotion in each other as well.
I would have to conclude that, ultimately, the overall levels of devotion for these two groups differed so little that it cannot be meaningfully measured.
https://blogs.berkeley.edu/2010/11/24/pilgrims-puritans-and-their-american-legacy/

https://www.newsweek.com/whats-difference-between-pilgrim-and-puritan-397974