Currently the only external Render engines for Lightwave3d is OctaneRender®
and the other solution is via the Unreal Engine Bridge to Unreal Engine 5
and the other one is Kray 3 unbiased cpu + gpu renderer
P.S. The entire Iron Man Mark 1 Suit scene was rendered with Lightwave 3d by embassy VFX , and numerous 1000's of cg shots in many movies and sci fi tv series so I am curious as to why it was left out of the plugin support. Its also used in Japan for Anime movies and animated series for alot of mainstream shows.