at the moment there is a whitelist for enemies and there is a toggle to not target things outside of the list, it would be great to get a blacklist option so turrets wont fire at the blacklisted ones. so for example i can set my laser turrets to ignore laser defence ones so i dont drain my whole power grid

Unfortunately, that's not for me. That's for the Factorio developers.
It would be fantastic to create not just a blacklist, but also groups, so you could combine multiple biters into one group and set a filter with a single value.
Maybe someday the developers will give this for us

Another mod developer has made it so now it's possible to filter out things a lot easier.
https://mods.factorio.com/mod/Turret-Blacklist?from=search