Top panels: JWST NIRCam composite image (R: F444W, G: F277W, B: F115W) of the J1007+2115 (left) and J0252−0503 (right) quasar fields. The quasar position is indicated by the tip of the white arrow. The positions of galaxies within a line-of-sight velocity window of ‖Δv_LOS‖ = 1500 km s⁻¹ are indicated by white circles. Bottom panels: Optical to near-infrared spectra (solid black lines) of the two quasars J1007+2115 (left) and J0252−0503 (right) taken from Onorato et al. (2025) with their wavelength and flux density axes on the top and right. We highlight the relative angular separation and redshift (left and bottom axes) of the galaxies identified in each respective field with filled colored circles. The quasar redshift (dotted line), coinciding with the Lyman-break in the spectrum, centers the line-of-sight velocity window used in our clustering analysis (gray shaded region). The color-coding of the circles refers to the galaxies’ line-of-sight velocity relative to the quasar redshift. The black star in the bottom left panel marks the position of a serendipitously discovered z ≈ 7.3 LRD (Schindler et al. 2025).