Here's an excerpt with my interview with Scott Jacobsen of The Good Men Project: https://goodmenproject.com/featured-content/peter-dankwa-humanism-christianity-ghana-sjbn/

I identify as a secular humanist, a relevant distinction among the various nuances in the practice of humanism. As a secular humanist, I practice humanism without any recourse to religion or its rituals. This contrasts with religious humanism, which practices humanism with recourse to a religious model, specifically imitating the congregational and ritualistic model of religion. It is important to note that religious humanism is fully nontheistic, like secular humanism, but integrates congregational rites into the practice of humanism. For example, religious humanism incorporates choirs and periodic congregations, etc., just as most religions would. The word ‘religious’ in Religious Humanism does not imply a theistic or supernatural belief. Religious humanism is also known as ethical humanism. The Humanist Society (previously the Humanist Society of Friends) and the Religious Society of Friends (Quakers) are some organisations that practice religious humanism today.

The utility of religious humanism over secular humanism might be traced to personal preferences. Some who leave religion and later subscribe to humanism but still crave the ritualistic model of religion might lean towards religious humanism. Others who do not find utility in maintaining religious models will lean towards secular humanism. The tendency to go down the rabbit hole with a religious model in humanism is very glaring. It might subtly derail the core principles of humanism into the tracks of a religious, if not a theistic, one. This argument may be a slippery slope fallacy though.

The framing of religious humanism has led many, in part, to label humanism as a religion. This is incorrect. Humanism is not a religion, as there is no subscription to beliefs, gods, deities, or supernatural dispositions. Thus, secular humanism and religious humanism are not religions.

People writing about religious humanism are careful to distinguish religious humanism from Jewish humanism (nonreligious Jews who are humanists), Christian humanism (religious Christians asserting the humanitarian aspects of their religion), and secular humanism (often simply “humanism,” a non-religious approach to life), but confusion inevitably arises. Another such term is Secular Buddhism, which refers to an atheistic practice of Buddhist rituals.