They think, “Jesus was cool. I like him, and I’m gonna try to be like him.” Kind of like their guiding light is what would Jesus do? But there isn’t a focus on identification, recruiting others, judging others based on their religion, fear of God, fear of punishment for sinning, respect for clergy as an authority, rituals, worship, etc. Basically, just the example of Jesus’ life.
inb4: Christian lol!! got em!
While not a term maybe a short blurb like “While I am not religious, I admire many of the lessons of Jesus as portrayed in the Bible, and I try to model parts of my life after his example.”
If applicable you can also add “Along with others I consider to be positive examples for leading a good and virtuous life.”