The hummus with score of 1 has only 28 calories per 100g vs 214 calories per 100g for the "ultra processed." Almost no fat (0.9g) in a food comprised mostly of chickpeas and tahini, both of which are high fat foods. There has to be an error here.

Guar gum is definitely an ultra-processed ingredient from what I can tell. It goes through multiple stages of industrial processing, and is used in everything from food products to cosmetics to hydraulic fracking.

It is also associated with esophageal and gastro-intestinal swelling, including to the point of causing obstruction. It is high in galactose and mannose, and subtly alters composition of the microbiome. People with GI disorders are very often advised to avoid it (note that although partially hydrolyzed guar gum was previously recommended for IBS to increase motility, in more recent years experts are increasingly saying to avoid it). It is categorized as "generally recognize safe" food additive in the US and EU.