As a typology system the enneagram  was originally introduced by Oscar Ichazo,  and later expanded and elaborated on by Claudio Naranjo and others who at times used different names for the types they found more suitable.   It's a "work in progress" and given that humans are infinitely complex,  it's understandable that no single name can ever capture more than a part of our nature.  See below the most popular keywords.

Type     Name (Ichazo's)     (Other Names/Keywords)       Passion             Virtue               Divine Idea

1.           Perfectionist                  (Good Person, Judge)                                    Anger                           Serenity                      Perfection

2.           Independent                 (Loving Person, Giver)                                    Pride                             Humility                     Will

3.           Displayer                         (Efficient Person, Performer)                        Deceit                          Truthfulness              Harmony

4.           Reasoner                         (Artist, Romantic)                                             Envy                             Equanimity               Origin

5.           Observer                          (Thinker, Wise Person)                                    Avarice                       Detachment             Omniscience

6.           Adventurer                      (Loyalist, Trooper)                                            Fear                              Courage                    Strength

7.           Idealist                              (Epicure, Planner)                                             Gluttony                     Sobriety                    Wisdom

8.           Moralist                             (Boss, Leader)                                                    Excess                          Innocence               Truth

9.           Seeker                               (Mediator, Peacemaker)                                  Sloth                            Action                       Love

Sample articles for all 9 types (pull-down menu, numbered by type) are about the experience of what it's like to see the world through the eyes of a type, and/or descriptions by experienced writers that offer a window on the range and scope of what knowing one's type can reveal.