Ambient / Dark Ambient Composer – Cubase + Omnisphere – Long-Form YouTube Music

I am looking for a composer/producer experienced in ambient and dark ambient music who works with Cubase and Spectrasonics Omnisphere.
I run a YouTube channel producing long-form cinematic environmental videos and am looking to commission original atmospheric music using evolving pads, drones, subtle textures and sparse melodic elements, generally with minimal or no percussion.
I can provide several reference tracks demonstrating the sound I am looking for. The finished music needs to be capable of being seamlessly looped/extended for long-form videos of approximately four hours. The commissioned track itself does not need to be four hours long; I am looking for a shorter master composition designed so that I can seamlessly extend it to approximately four hours.
I already own Cubase 15 and Omnisphere 3, and my longer-term intention is to learn to create this style of music myself. I would therefore be particularly interested in working with someone willing to provide the Cubase project/MIDI and explain how the composition was constructed, in addition to supplying the finished audio.
Initially I would like to commission one track as a trial, with the possibility of further ongoing work.
Please send examples of relevant ambient/dark ambient work you have produced.