ARM Cortex-A510
The ARM Cortex-A510 is the successor to the ARM Cortex-A55 and the first ARMv9 high efficiency "LITTLE" CPU. It is the companion to the ARM Cortex-A710 "big" core. It is a clean-sheet 64-bit CPU designed by ARM Holdings' Cambridge design team. Design 

The Cortex-A510 is a “LITTLE” CPU core focusing on high efficiency, bringing the following improvements from last gen:

 3-wide in-order design, the Cortex-A55 was 2-wide. 3-wide fetch and decode front-end as well as 3-wide issue and execute on the back-end, which includes 3 ALU's. 35% performance uplift compared to Cortex-A55
 20% more energy efficient than Cortex-A55
 3x ML uplift

ARM announced a refresh for the Cortex-A510 CPU core on 28 June 2022 along with other CPU cores. The refresh improved power efficiency by 5% and scalability from up to 8 cores to up to 12 cores. Additionally, the refresh could be configured with 32-bit support, whereas the original was 64-bit only. Usage
The Cortex-A510 CPU core is used in the following SoCs

Qualcomm Snapdragon 8 gen 1 Snapdragon 8+ gen 1 Snapdragon 8 gen 2 Snapdragon 7 gen 1 Snapdragon 7+ gen 2
MediaTek Dimensity 9200+ Dimensity 9200 Dimensity 9000+ Dimensity 9000 Dimensity 7200
Samsung Exynos 2200

References 

ARM processors