Bismillah,
Asalamu Alaykom,
We have narrations from the imams (peace be upon them) which praise Bilal (ra) such as the following:
Imam al-Sadiq (may peace be upon him), who said: «Bilal was a righteous slave, meanwhile Suhayb was a slave of evil who used to weep over Omar.
Bihar al-Anwar, by Al-Majlisi, volume 22, page 142, on the authority of Al-Kashi
May Allah give you sucesss