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In recent times, SMEFT, along with a superlative repertoire of theoreticaland computational tools, has emerged as an efficacious platform to test theviability of proposed BSM scenarios. With symmetry as the backbone, higher massdimensional ($\geq 5$) SMEFT operators constitute the \textit{lingua franca}for studying and comparing the direct or indirect effects of UV models on lowenergy observables. The steady increase in the accessible energy scales forcontemporary particle collision experiments prompts us to inspect effectiveoperators beyond the leading order and investigate their measurable impact aswell as their connections with the appropriate BSM proposals. We take the nextstep in delineating the possible UV roots of SMEFT operators by extending ourdiagrammatic approach, previously employed for CP, baryon, and lepton numberconserving dimension-6 operators, to the complete set of purely bosonic SMEFToperators up to mass dimension-8. We catalogue a diverse array of Feynmandiagrams elucidating how the operators encapsulate heavy field propagatorswhile abiding by a notion of minimalism.

EFT Diagrammatica II: Tracing the UV origin of bosonic D6 CPV and D8 SMEFT operators