[verb (plain form)] + だの + [verb (plain form)] + だの
[i-adj] + だの + [i-adj] + だの
[na-adj] + だの + [na-adj] + だの
[noun] + だの + [noun] + だの
Quoted speech/phrases may also be used as A and B.
The structure だの~だの is used to list multiple examples from a larger set, often with a negative, critical, or exasperated tone. It implies that the speaker finds the listed items annoying, excessive, or tiresome. It translates roughly to "things like A and B" or "A and B and so on."
This pattern can be used with nouns, verbs, and adjectives, and the items listed are typically presented as representative examples – not an exhaustive list.
Unlike やらから~やら or とかから~とか, which can be neutral, だの~だの almost always carries a negative nuance. The speaker is typically expressing frustration, annoyance, or disapproval about the things being listed.
だの~だの is used to quote or paraphrase things someone has said, especially when the speaker finds those statements unreasonable or tiresome.
When used with nouns, だの directly attaches without any copula.