There is a new standard being developed (I know, I know) called Matter. All the heavy hitters are on board: Apple, Amazon, Google, Hue, Lutron, Samsung including specifically for smartthings.
The goal is to make things work together better, specifically for the voice assistants. I know a lot of people have said that before, but these guys seem to be serious and we should start seeing Matter compliant products by the end of the year.
We don’t know all the details yet, but it looks promising.