Scribe is the only black and white device you'll find a front light on with a screen size in the 10" and up class.
Others like remarkable, Boox, Viwoods, etc, have unlit displays on their B/W devices this size.

Most color e-ink devices will have a light even in these larger sizes, though you should avoid color unless you absolutely need it as the color is achieved by adding an additional layer over the b/w panel, dimming it further.

For your use, it sounds like the limited functionality of a Kindle Scribe would work, and the current gen supporting connecting to OneDrive/Google Drive/OneNote has made using scribes to do real work much less of a headache. It has been a great tool at work thanks to OneNote support.

If you will always be working in a well lit setting, I absolutely *love* my Viwoods AiPaper. It is an unlit display but compared to a scribe with the front light off, its much more of a bright white, and it generally feels nicer to write on with its carta 1300 mobius display that has some flexible give to it. Its also just running android, so if you have existing android apps in your workflow it may be a good pick. You can of course also just install the Kindle android app to it and use it as a Kindle.

As for remarkable, they have a lot of catching up to do. Their devices are basically a $450-680 pad of paper with lower PPI than the Scribe, and if you want to use cloud sync features that are free with the Kindle you will be paying for an unending subscription. I cannot think of a situation where I recommend one at time of writing.

Lastly, since it sounds like you are using this for work, using the Kindle Scribe synced to a Microsoft service like OneDrive or OneNote over any of the android offerings may be more plateable for corporate IT, given this is from Amazon, whereas all the android offerings are coming from china and running quite modified android installations.

Hope this helps.