A lot of discussions have focused on DisplayPort 2.0 lately but what is DisplayPort 1.4? It is the previous standard that may be well suited for your needs.
MicroConnect Premium Optic Fiber DisplayPort 1.4 - HDMI 2.0 Cable, 10m, DP-HDMI-1000V1.4OP - Oprema
Delock Products 85930 Delock Active DisplayPort 1.4 to HDMI Cable 4K 60 Hz (HDR) 3 m
CSL-Computer 8k DisplayPort 1.4 Cable 1 m - DisplayPort to DisplayPort - DP 1.4 7680 x 4320
DisplayPort 1.4 to HDMI 2.0b HDR 4k@60hz Active Adapter - UPTab
DisplayPort 1.4 vs HDMI 2.1
StarTech.com 2m VESA Certified DisplayPort 1.4 Cable - 8K 60Hz HBR3 HDR - 6ft Super UHD DisplayPort to DisplayPort Monitor Cord - Ultra HD 4K 120Hz DP 1.4 Slim Video Cable M/M
Uni-directional 8K 60Hz Displayport 1.4 to HDMI 2.1 Cable 4K 120Hz – CABLETIME
DisplayPort 1.4 Active Optical Cable - Vitex
DisplayPort 1.4 Pro AV/IT Integrator Series™ Certified 8K Cable with ProGrip™ 15ft
CableDeconn DisplayPort 1.4 to HDMI 2.1 Ultra HD 8K Male to Female Cable 0.25m Converter 8K@60Hz 4K@120Hz Directional Compatible with DisplayPort PC and HDMI Displays Tvs A0101-Diplayport 1.4 8K-CableDeconn