I have made a short, animated explainer about the Omicron variant and how if diverges from the Delta (and other) variants of SARS-CoV-2. Watch it here. The data for the World map is from GISAID (www.gisaid.org), whereas all other information is from the research papers listed at the end as references.
This animated data-visualization shows the shift from delta (blue) to omicron (red) variant of concern of coronavirus in the EU / EØS countries of Europe. The incidence in the different countries are shown as height. All data are from European Centre for Disease Prevention and Control (https://www.ecdc.europa.eu/en/news-events/weekly-epidemiological-update-omicron-variant-concern-voc-week-2-data-13-january-2022). https://youtu.be/hr8TZO48GQ0