Is there a site like gg.deals that tells you if any of your wishlist games are in a current bundle?

There's a 'bundles' section on the game's page on gg.deals. Shows a $6.99 bundle on Fanatical.

https://isthereanydeal.com/waitlist/#/filter:&bundled

I have used barter.vg, if you are logged in and have synched up it will show which active bundles have our wishlisted games in them

https://barter.vg/bundles/

Also Fanatical tells you if a Wishlist game is in a bundle, but I guess that's only for bundles from them. ITAD is probably the way to go, I wasn't sure if/how it notified you of bundles, though.

When you create a price alert on gg.deals, you can also choose for which types of news referencing that game you want to get alerted. That includes Bundle news. And you can choose how you want to get alerted (email, browser or both).

You can also ask this functionality from the creator of the site. They have a suggest next thing thingie, if I remember correctly.

Just use the RaChart Extension