This workbook is a compilation of the data posted by Blizzard in their latest Arena Updates news blog post on December 19, 2018

Below is the Card Bucket info in a CSV file posted by Blizzard

https://bnetcmsus-a.akamaihd.net/cms/gallery/vi/VI3OLAJEZ9MX1545244600916.csv

The raw data from the CSVs can be found in the BucketSource worksheet with my additions. Blizzard forgot to include "Class" info for previous removed cards. The recently added Classic cards are also missing.

Card DB is my custom version of drstein's DB spreadsheet based on HearthstoneJSON API

drstein's DB sheet as well as Rastakhan's Rumble random card analysis

Complete BucketList

This is not a custom tier list or card ranking. Keep in mind the 4 new Classic cards are not included at this time

I have created separate worksheets for each class' bucket list.
There are several Filter Views set up which display individual buckets for better viewablity. Look for the dropdown arrow next to a funnel-looking icon to access them.
You can create temporary filters or save your own copy of the entire workbook and create your own.

Check here if having trouble

I may include a horizontal version of the bucket lists later on. Keep in mind this would have little-to-no "spreadsheet functionality" and would merely be a visual aid.