Color-coded embedded space maps showing catalog photometric features. Top row (left to right): z-band magnitude, i − z color, and z − J color. Bottom row: z-W1 color, g-band depth, and z-band PSF size. Top left: magnitude gradients across both regions underscore the crucial role of the brightness in shaping the low-dimensional representation. Top center: Multiple regions of strong i − z color indicate that while this feature may not fully dominate the embedding, it still plays a key role–evidenced by patterns and some clustering that overlap with the positions of spectroscopically confirmed quasars. Top right: The z − J color map reveals populations consistent with blue quasars (z − J ≤ 0.5), quasars with intermediate colors (z − J ∼ 1.0–1.5), and a population with red NIR slopes (z − J > 2), supporting the potential of the model to uncover diverse quasar types. Bottom left: Red z-W1 colors seem to reflect the W1 blending due to companions and potential faint T dwarf populations. Bottom center: Subtle observational systematics, such as variations in background noise texture, may influence the latent space structure as evidenced by the g-band depth pattern. Bottom right: Larger PSFs point to a mix of slightly extended or noisy z-band images.