Which older Latin poet most influenced Lucretius’s style?

In terms of poetic diction and style, Lucretius was significantly influenced by the older Latin poet Quintus Ennius, who is often regarded as the father of Roman poetry.1

Lucretius drew upon Ennius’s work to help him navigate the challenge of rendering complex Greek philosophical concepts into Latin hexameters at a time when the Latin language lacked a formal philosophical vocabulary. To achieve this, he adopted several stylistic elements from Ennius, including the frequent use of alliteration and assonance, as well as the incorporation of archaic constructions and metrically convenient, solemn forms.1