Our investigation involves sequential warped product manifolds that contain gradient Ricci-Bourguignon harmonic solutions. We present the primary connections for a gradient Ricci-Bourguignon harmonic solution on sequential warped product manifolds. In practical applications, our research inves-tigates gradient Ricci-Bourguignon harmonic solitons for sequential generalized Robertson-Walker space-times and sequential standard static spacetimes. Our finding generalizes all results proven in 23.
Suh et al. (2025) studied this question.