We construct an AdS5 hard-wall model for the PC = + + glueball spectrum of pure Yang-Mills theory. Following Boschi-Filho, Braga, and Carrion, each spin-J channel is dual to a 5D scalar with Bessel order \nu; we replace their classical assignment \nu = 2 + J by \nu = 4 + \frac{3}{2} L (J = L + 2), incorporating anomalous dimensions at the infrared fixed point. The spectrum exhibits two branches: a coupled branch (J = 0,2) and a decoupled branch (J\geq 4, \nu \rightarrow 2). With one scale input from M(0^{++}), the model predicts mass ratios in agreement with SU(N) lattice data (N = 2 - \infty) at 1 - 3\% for ground states and with Sp(2N) data at comparable accuracy in the large-N limit. The 0^{++} first radial excitation deviates by -5.5\%, diagnosing the onset of stringy corrections.