Based on this product's specifications, here are some alternatives and similar models
Smartphone Xiaomi T15 Pro 6.83" — MediaTek Dimensity 9400+, 12 GB RAM, 512 GB, Grey, 5500 mAh, IP68
Summary description:
Xiaomi T15 Pro is a 6.83" smartphone powered by the MediaTek Dimensity 9400+ with 12 GB LPDDR5X RAM and 512 GB internal storage. It features a 2772×1280 144 Hz HDR10+ display (max brightness 3200 cd/m²), triple rear cameras (50 MP + 50 MP + 12 MP with OIS and 120° ultrawide), 32 MP front camera, 5500 mAh battery with Hypercharge fast and wireless charging, IP68 protection and HyperOS 2.