Sadly I don’t know how slave free Tony Chocolonely is, I was reading up about this the other day and they have been removed from the slave free chocolate list due to ties with big coco.

Article talking about it’s removal - https://www.foodnavigator.com/Article/2021/02/16/Tony-s-Chocolonely-axed-from-Slave-Free-Chocolate-list-defends-ties-with-Barry-Callebaut

Slave free chocolate list - https://www.slavefreechocolate.org/ethical-chocolate-companies/

Hope this is helpful :)