@Tomasz *******
if you are specifically looking only for insurance within thailand, this might help from the list of insurance in the O visa category.
-
*************************
If you are looking for digit nomad visa type, goto digital nomad group in reddit.com, you will come up with Safetywing, Genki, …etc.
Personally, I am leaning towards Imglobal for digital nomad/ world citizen myself. Hope this helps!