Motivated by the recently obtained Hadrons to Atomic nuclei from Lattice QCD potentials for the $N\text{−}\varphi$, $N\text{−}J/\psi$, and $N\text{−}{\eta }_c$ interactions, we investigate the structure of the exotic nuclei ${}_{\varphi }{}^8\mathrm{Be}$, ${}_{J/\psi }{}^8\mathrm{Be}$, and ${}_{{\eta }_c}{}^8\mathrm{Be}$ as $\alpha +\alpha +M$ three-body systems ($M$ denotes the meson). The bound and resonant states are calculated consistently using the Gaussian expansion method, with resonances identified via the complex scaling method. For the $\alpha \varphi$ and $\alpha$-charmonium interactions, a folding potential is constructed based on the Hadrons to Atomic nuclei from Lattice (HAL) QCD potentials and fitted to a Woods-Saxon form. We find that the $\varphi$ meson exhibits a strong “gluelike” effect, binding the $0_1^{+}$, $2_1^{+}$, and $4_1^{+}$ resonant states of ${}^8\mathrm{Be}$ into stable states and significantly reducing the $\alpha \text{−}\alpha$ distance. In contrast, the interactions of $J/\psi$ and ${\eta }_c$ with the nucleus are weaker, forming only shallow bound states with the $0_1^{+}$ state of ${}^8\mathrm{Be}$ and even increasing the $\alpha \text{−}\alpha$ separation. Notably, our analysis predicts weakly bound $\alpha \text{−}J/\psi$ states in the ${{}^{4}S}_{3/2}$ and ${{}^{2}S}_{1/2}$ channels, a result not reported in prior studies, which suggests that ${}_{J/\psi }{}^8\mathrm{Be}$ may not be a Borromean nucleus. The sensitivity of the ${}_{\varphi }{}^8\mathrm{Be}(4_1^{+})$ state—transitioning from bound to resonant depending on the $\alpha$-particle radius—highlights the subtle dynamics at play. These results provide a systematic theoretical comparison of how different vector mesons modify nuclear clustering, offering critical predictions for future experimental searches of such exotic hadron-nucleus systems.

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• Strong interaction