Words that have identical vowel-based rhyme sounds in the tonic syllable. Moreover, that tonic syllable must start with a different consonantal sound.
There are no pure rhymes for "ya self".
Words that have a pure rhyme on their last syllable only.
elf
    self
      shelf
        herself
          himself
            hisself
              itself
                myself
                  oneself
                    ourself
                      theirself
                        themself
                          yourself
                            yourself
                              Delph
                                yourself
                                  bookshelf
                                    Gotthelf
                                      Words that "almost" rhyme on the vowel-based rhyme sound of the stressed syllable like: be/eat or maybe/shapely.
                                      Gotthelf
                                        Rhymes made up of more than one word. For instance, "jealous" and "tell us" or "shaky" and "make me."
                                        There are no mosaic rhymes for "ya self".