GNU/Linux Kali Install Radeon RX 6600/6600XT Driver Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install AMD Radeon RX 6600/6600XT Graphics Driver in Kali GNU/Linux 64-bit Desktop.
And the Radeon RX 6600/6600XT Linux Kali Driver Support is the AMDGPU Software.
Moreover, the AMDGPU Driver supports all AMD Radeon GPUs based on the Graphics Core Next (GCN), Radeon DNA (RDNA), and Compute DNA (CDNA) architectures.
AMDGPU Kali Linux Installation Guide