There are some important differences in the way rituals were designed between 4e and 5e.
In 4e, rituals were completely different and separated from other "spells" (i.e. powers). So rituals in 4e didn't appear on the list if combat-oriented powers, and vice versa. They were like an add-on for those characters who had this class feature, or took the appropriate feat. Note that rituals in 4e were classified into arcane, divine, and nature (and another I cannot recall at the moment) so classes not associated with a particular power could not access those rituals that would seem inappropriate.