This, I think, is a valid observation, understanding, nevertheless, that there are some things that are fairly common to all.
Some people are intellectually persuaded, at least initially, as was Chesterton. This was helpful to him in developing faith, which is a different thing from intellectual persuasion. For Catholics or those interested in the subject, it isn’t terribly difficult to become intellectually persuaded because of the richness of the Catholic writings, and not only those of theologians. There is a 2,000 year history of the writings of the best and brightest, the holiest and of the most inspired. No stone at all is unturned. A lifetime would not suffice to study it all, but a lifetime is sufficient to delve deeply into it if one is of that particular bent.
Some are persuaded by experience, which, for most Catholics does not include such things as visions, let alone things that are often described as “paranormal”. The Church is rather suspicious of dramatic phenomena. What it is not suspicious of are the interior reflections one has; some of which are brought on by prayer or study or liturgies, and many, many experience them on a regular basis. Nevertheless, something needs to be said about mysticism, which is not strange to the western Church, but is a significant part of the Eastern Church. Mysticism is, and intends to be, experiential. All Catholics, both eastern and western, would say, however, that it needs to be guided and directed by the means the Church has of doing that.
Some develop an enhanced devotion to the Eucharist. If, as we believe, it really is the body and blood of Jesus Christ and if He is truly God, then the experience of the Eucharist is as close as a living being comes to heaven. Some are very much aware of that and do experience it. Others, who are not quite ready to fully accept it, or who have not thought about it sufficiently, may not have that experience.
Some have a sort of feeling of the weight of history and the massiveness of the Communion of Saints, and sort of lose the “timeclock separation” between them and, say the early martyrs, the doctors of the Church and those other, innumerable holy people who have gone before us. For such people, (as Faulkner said of the South) the “air is thick with spirits”, and their presence is strongly felt.
Some have a strong attraction to obedience. Such people are often sinners despite their best efforts; sometimes great sinners, but, believing for whatever reason, subject themselves to the penitence of the Church. The Catholic belief in Grace and its power often turns such people to “conversion” to yet another way of living their faith.
Some, for whatever reason (and it can be any number of them) reach a point where they make a conscious choice to abandon themselves to faith. “Faith” is not quite “belief”, it’s more like “trust”. While not true of all, in many people there is a deep desire to do that; to abandon oneself to a known “meaning to life” which, if they make the step, brings peace. Such people often find themselves strongly attracted to charitable works and perform them strictly out of love of God and those whom God charges us to serve. Not surprisingly, it is easier to do that when one knows one has the weight of 2,000 years and uncountable saints, scholars and mystics as underpinnings of his decision in favor of abandonment.
A person more familiar with the subject than I could do a much better job. I am not in any manner attempting to exhaust the subject. My only point is that, yes, it differs with different people.
But, things have an appearance, and we interpret them as best we can. An intuition, if you like. It is a realization of my own, and of many others who lack a certain religious certainty.