Step 1:
Kauthumiya, Jaiminiya, and Ranayaniya are important branches of Samaveda.
Step 2:
Taittirīya Śākhā belongs to:
\[
\boxed{\text{Krishna Yajurveda}}
\]
Step 3:
Therefore, it is not related to Samaveda.
Step 4:
Hence, the correct answer is:
\[
\boxed{\text{(3) Taittirīya Śākhā}}
\]