Based on this product's specifications, here are some alternatives and similar models
Smartphone Xiaomi 15 — Snapdragon 8 Elite, 12 GB RAM, 512 GB, 6.36" AMOLED, 5240 mAh, Dual SIM, IP68, Green
Summary description:
Xiaomi 15 is a 5G smartphone powered by the Snapdragon 8 Elite processor with 12 GB LPDDR5X RAM and 512 GB internal storage. It features a 6.36" (2670×1200) AMOLED display, triple rear camera with 50 MP main sensor, 32 MP front camera, Dual SIM support, IP68 protection and a 5240 mAh battery for extended use.