In the notes for the "Final Fantasy XIV - The Best" album, there is a list of all the composers, arrangers, lyricists and vocals by songs. Here's the list of all the songs with lyrics and their credits.
From FFXIV - The Best notes/individual song credits
1. Wayward Daughter
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Natsuko Ishikawa & Michael-Christopher Koji Fox
Vocals: Satoko Fujita & Takashi Baba & Joe Tsuchizaki
2. Dragonsong
Music: Nobuo Uematsu
Arrangement: Tsutomu Naria
Lyrics: Michael-Christopher Koji Fox & Kazutoyo Maehiro
Vocals: Susan Calloway
3. Rise
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Michael-Christopher Koji Fox
6. Oblivion
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Ayumi Murata & Akane Ikeya
7. Locus
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Michael-Christopher Koji Fox & Masayoshi Soken
8. Equilibrium
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Ayumi Murata
9. Heavensward
Music: Masayoshi Soken
Arrangement: Yoshitaka Suzuki
Lyrics: Michael-Christopher Koji Fox
Vocals: Omega Bone
11. Metal - Brute Justice Mode
Music: Masayoshi Soken
Arrangement: Ken Ito & Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Michael-Christopher Koji Fox & Masayoshi Soken
14. Revenge of the Horde
Music: Masayoshi Soken
Arrangement: Yoshitaka Suzuki
Lyrics: Michael-Christopher Koji Fox
15. Under the Weight
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
16. Fiend
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Dan Inoue
19. Exponential Entropy
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Michael-Christopher Koji Fox
20. Beauty's Wicked Wiles
Music: Masayoshi Soken
Arrangement: Kenichi Kuroda & Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Paula Kaye Gerhold
21. Answers - Reprise
Music: Nobuo Uematsu
Arrangement: Masayoshi Soken
Lyrics: Yaeko Sato & Michael-Christopher Koji Fox
25. Metal
Music: Masayoshi Soken
Arrangement: Yoshitaka Suzuki & Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Michael-Christopher Koji Fox & Masayoshi Soken
28. Rise of the White Raven
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Latin: Eva Kappeller / Chorus: Masayoshi Soken
29. Fallen Angel
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
31. Pa-paya
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Chorus: Masami Abe & Masayoshi Soken
35. Ultima (Orchestral Version)
Music: Masayoshi Soken
Arrangement: Sachiko Miyano
Lyrics: Michael-Christopher Koji Fox
Chorus: The Mih Khetto Chorus
39. Through the Maelstrom
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Masayoshi Soken / Chorus: Tidus Seven
41. Thunder Rolls
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Michael-Christopher Koji Fox
Vocals: Akane Ikeya
44. Amatsu Kaze
Music: Masayoshi Soken
Arrangement: Masayoshi Soken
Lyrics: Banri Oda & Michael-Christopher Koji Fox
Vocals: Michael-Christopher Koji Fox & Masayoshi Soken & Koji Shirashugi
46. Revolutions
Music: Nobuo Uematsu
Arrangement: Tsutomu Naria
Lyrics: Michael-Christopher Koji Fox
Vocals: Susan Calloway
54. Answers
Music: Nobuo Uematsu
Arrangement: Tsutomu Naria
Lyrics: Yaeko Sato & Michael-Christopher Koji Fox
Vocals: Susan Calloway