MHD Mode Composition in the Inner Heliosphere from the Parker Solar Probe's First Perihelion - Chaston,CC; Bonnell,JW; Bale,SD; Kasper,JC; Pulupa,M; de,Wit TD; Bowen,TA; Larson,DE; Whittlesey,PL; Wygant,JR; Salem,CS; MacDowall,RJ; et al. (ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2020)