Question about DMsGuild adepts

I was just wondering if there was a list on the wizards site or something that showed which DMsGuild adepts works are AL legal? Or are they all AL legal? I could only find this list: https://dnd.wizards.com/articles/news/dms-guild-adept-news?utm_source=dlvr.it&utm_medium=twitter and it’s old and small.

Looking at other DMsGuild Adepts works, it doesn’t seem they are all AL legal, but maybe I’m wrong?

Is there any more rigourous testing for DSguild Adepts AL-legal works, than non DMGA AL-legal works like this: https://www.dmsguild.com/product/244431/The-Border-Kingdoms-A-Forgotten-Realms-Campaign-Supplement?src=hottest_filtered&filters=45470_0_0_0_0_0_0_0 ? (I assume all AL-Legal works have some testing right?)

I’m running Tomb of Anihillation, and was thinking of adding some bonus content. I thought that DMsGA works becoming AL legal would mean that they had been playtested, and declared "official", so I could rely on their quality, but maybe not?

I dont know… but a complete list of DMsGuild Adepts works that are AL legal would be great, if WotC has made one, thanks!

What options do adepts have for resisting drain?

I was looking at taking the Centering metamagic on my adept, before realizing that it specified “magician,” and the sidebar at the bottom of CRB p.325 stating that only four metamagics in the book are useful for adepts doesn’t include it either.

The sidebar also says that “we’ll have plenty more metamagics for you in future supplements,” but from what I’ve found online none of the other books seem to offer any options to help adepts deal with drain. Searching through a list of positive qualities didn’t turn up anything either.

So, do adepts have any options for resisting drain other than simply increasing their Body and Willpower?