It seems that you got your question answered, I would just add few bits- some sex hormones/AAS are more supressive than others but they are all supressive including DHT so its not good to use them if trying to recover natural production.
As for DHT derivatives they all have similarites but also they have some differences- for example during cycle person can combine primobolan and masteron- they are both DHT derivatives but each of them activates few receptors than other doesnt so in a way they can compliment each other- so instead of using higher amount of masteron one can reduce masteron dose and add some primobola
Andractim is very similar to natural DHT, AFAIK its closest you can get to natural DHT but it does not have much anabolic properties (if any?), so andractim can be used and is best choice IMO to top up natural DHT levels (for example on TRT) while masteron would not be best , but using it during cycle it is poor choice and masteron would be good one.
I always recommend to people when they use testosterone to use some DHT derivstives as well- main reason is that testosterone does increase muscle growth but strenght not so much while DHT does not increase muscle growth that much but increases strenght. So its win-win situation.