Multiple icloud contact lists

I have an iphone 12 pro running ios 17.6.1 I currently have a problem with my contacts in that I have a regular contact list called all iCloud which has all my icloud contacts but I also for some reason have about 1,000 other duplicated lists called Family, each with the same 14 contacts. Is there a way I can do a mass delete of these lists so that I only have my main icloud list. The only way I have found is to delete each list individually which I currently spend about 10 minutes each day on, but will probably take me a whole day to do. Please see screengrab