I asked the same question, since I was an avid Buddha anusati practitioner, and found the "Nava Guna Gatha" answered my question. However, I am not sure which is older (Visuddhimagga or Nava Guna Gatha?) I assumed the Nava Guna Gatha to be older, since it is a part of Pali devotion...please correct me if I am wrong.
"anuttaro" is treated as an entirely different quality from "purisa damma sarathi"...this Gatha however, leaves out "Buddho", I think because it is included in the "sammasambuddho" quality.
So there are actually 9 qualities instead of 10, with 1 quality being a subset of the other quality.Nava Guna Gatha (Psalm of Nine Qualities)http://www.buddhanet.net/pdf_file/vandana02.pdf
1. By name He is an Arahant as He is worthy
Even in secret He does no evil
He attained the fruit of Arahantship
To Thee, the Worthy One, my homage be.
2. By wisdom He is Sammasambuddha
By teaching He is Sammasambuddha
A fully Enlightened one is He in the world
To Thee, the fully Enlightened One, my homage be.
3. He is endowed with wisdom and knowledge
His wisdom is made known
The past, future and present He knows
To Thee who is endowed with wisdom and
knowledge, my homage be
4. He is Sugata being self-disciplined
Being beautiful He is Sugata
In the sense of going to the good state of Nibbāna
To Thee, the Sugata, my homage be.
5. By name He is Lokavidu
He knows the past and future
Things, beings and space He knows
To Thee, the Knower of worlds, my homage be.
6. By wisdom and conduct unrivalled is He
Who is the Unrivalled of the world
In this world He is revered as an Incomparable One
That Incomparable One, I salute.
7. O Charioteer, the King Charioteer
A charioteer, a clever trainer is He of Deva
Who is a clever charioteer of the world
And is a respectful charioteer in this world,
That great trainer, I salute.
8. To Devas, Yakkhas and men in this world
He gives the highest fruits
Among those taming the untamed
To Thee, O Remarkable One, my homage be.
9. The Bhagava is repleted with fortune
He has destroyed all passions
He has crossed the ocean of Saṃsāra
To that Blessed One, my homage be.
Nava Guṇa Gāthā
1. Arahaṃ arahoti nāmena —
Arahaṃ pāpaṃ na kāraye
Arahattaphalaṃ patto —
Arahaṃ nāma to namo
2. Sammāsambuddha-ñāṇena —
Sammāsambuddha te namo
3. Vijjā-caraṇa-sampanno —
Tassa vijjā pakāsitā
Vijjā-caraṇa te namo
4. Sugato sugatattānam —
Sugato sundaram pi ca
Nibbānaṃ sugatiṃ yan ti —
Sugato nāma to namo
5. Lokavidū ti nāmena —
Lokavidū nāma te namo
6. Anuttaro ñāṇasīlena —
Yo lokassa anuttaro
Anuttaro pūjalokasmiṃ —
Taṃ namassāmi anuttaro
7. Sārathī sārathī devā —
Yo lokassa susārathī
Taṃ namassāmi sārathī
8. Deva-yakkha-manussānaṃ —
Loke aggaphalaṃ dadaṃ
Adantaṃ damayantānaṃ —
Purisājañña te namo
9. Bhagavā bhagavā yutto —
Bhaggaṃ samsāra-muttāro —
Bhagavā nāma te namo