Across the Commonwealth and around the world, we have seen heart-warming stories of people coming together to help others, be it through delivering food parcels and medicines, checking on neighbours, or converting businesses to help the relief effort.
What does that mean? I Considering the context, it would mean "for example" apparently. Am I wrong?
In this case "be it" means "whether it is", so, yes, you are more or less right that it introduces a list of examples. e. delivering food parcels etc.
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In this case "be it" means "whether it is", so, yes, you are more or less right that it introduces a list of examples. "through" means "by means of", i.e. delivering food parcels etc. is that way in which people help others.
This kind of "be ~" is a largely archaic subjunctive usage that is preserved in certain set combinations and patterns such as "be it", "be they", "be ~ what it may".