Is the gentleman on the right Yoshitaka Matsumoto (son of Yoshio, current owner of the Meisho horses)?

Jnglmpera said in comment #2607622:

Is the gentleman on the right Yoshitaka Matsumoto (son of Yoshio, current owner of the Meisho horses)?

Looks like his trainer and former jockey Ishibashi

Meisho Samson finished second in the Takarazuka Kinen twice in a row under Ishibashi and Yutaka respectively.
Now, Meisho Tabaru, trained by Mamoru Ishibashi and ridden by Take Yutaka has managed to win the Takarazuka Kinen twice in a row.
This is, without a doubt, the power of horse racing.

10xkiet said in comment #2607770:

Looks like his trainer and former jockey Ishibashi

To be honest, I couldn't makes heads or tails over either Yoshitaka Matsumoto or Mamoru Ishibashi because neither really matched with my personal reference from when I saw both of them together last Tenno Sho (Autumn)

From left:Ishibashi Mamoru, Take Yutaka, ???, ???, Matsumoto Yoshio