Low sulphites: This refers to wines with lower sulphite additions made pre- and post-winemaking. We define low sulphites wines as those containing less than 50mg/L (50 parts per million).
Organic: This refers to the organic farming practices applied to vineyards. The Soil Association provides a good definition for Organic wine and viticulture.
https://www.soilassociation.org/take-action/organic-living/what-is-organic/organic-wine/
Biodynamic: This refers to the biodynamic farming practices applied to vineyards. The Biodynamic Association UK provides a good definition for Biodynamic wine and viticulture.
https://www.biodynamic.org.uk/biodynamic-viticulture-the-basics/