I would go for a HDMI 2.1 with 48Gbps speed. I think they’re known as “Ultra High-Speed HDMI” cables. I just recently purchased one and use such an HDMI cable myself. Furthermore, Apple recommends that the HDMI cable should also be Dolby Vision compatible, which most 48Gbps HDMI 2.1 cables are. They come at various price points, Apple recommends this HDMI, but searching for 48Gbps, HDMI 2.1, and Dolby Vision in your region, should yield some cables for cheaper than the Apple recommended.
I would go for a HDMI 2.1 with 48Gbps speed. I think they’re known as “Ultra High-Speed HDMI” cables. I just recently purchased one and use such an HDMI cable myself. Furthermore, Apple recommends that the HDMI cable should also be Dolby Vision compatible, which most 48Gbps HDMI 2.1 cables are. They come at various price points, Apple recommends this HDMI, but searching for 48Gbps, HDMI 2.1, and Dolby Vision in your region, should yield some cables for cheaper than the Apple recommended.