If there is any similarity, from what I can see, Gullfoss Tame and Smooth Operator are somewhat similar, as are Gullfoss Recover and TEOTE (with appropriate settings). Soothe2 is doing it's own thing. It makes sense that Soothe2 would be an out-lyer as I believe it's focus is resonances vs the other tools which seem to be adjusting vs a reference like white, pink or waterfall noise.
![Love :love:](./images/smilies/icon_love.gif)