Opengapps has currently no Gapps for Android 11 (They are in the final test stage). Bitgapps: I don't know. NikGapps: Is what I used for this ROM and worked well.
At the end of the day, you can do everything you expect with all of those distributions. It's just that you sometimes get errors with one, and can then flash a different one.
Do note however that you may need so-called add-ons for NikGapps. For instance, the SetupWizard at the start of a new ROM (When you choose an Android backup) is it's own add-on.
By the way: The gcam "MGC_7.6.008_Parrot043_V7.apk" works without any issues on this ROM.