Post with code to generate gallery of ggplot2 themes (can also directly see them there)
https://martinctc.github.io/blog/vignette-generate-your-own-ggplot-theme-gallery/
theme_list <-
list("ggplot2::theme_minimal()" = theme_minimal(),
"ggplot2::theme_classic()" = theme_classic(),
"ggplot2::theme_bw()" = theme_bw(),
"ggplot2::theme_gray()" = theme_gray(),
"ggplot2::theme_linedraw()" = theme_linedraw(),
"ggplot2::theme_light()" = theme_light(),
"ggplot2::theme_dark()" = theme_dark(),
"ggthemes::theme_economist()" = ggthemes::theme_economist(),
"ggthemes::theme_economist_white()" = ggthemes::theme_economist_white(),
"ggthemes::theme_calc()" = ggthemes::theme_calc(),
"ggthemes::theme_clean()" = ggthemes::theme_clean(),
"ggthemes::theme_excel()" = ggthemes::theme_excel(),
"ggthemes::theme_excel_new()" = ggthemes::theme_excel_new(),
"ggthemes::theme_few()" = ggthemes::theme_few(),
"ggthemes::theme_fivethirtyeight()" = ggthemes::theme_fivethirtyeight(),
"ggthemes::theme_foundation()" = ggthemes::theme_foundation(),
"ggthemes::theme_gdocs()" = ggthemes::theme_gdocs(),
"ggthemes::theme_hc()" = ggthemes::theme_hc(),
"ggthemes::theme_igray()" = ggthemes::theme_igray(),
"ggthemes::theme_solarized()" = ggthemes::theme_solarized(),
"ggthemes::theme_solarized_2()" = ggthemes::theme_solarized_2(),
"ggthemes::theme_solid()" = ggthemes::theme_solid(),
"ggthemes::theme_stata()" = ggthemes::theme_stata(),
"ggthemes::theme_tufte()" = ggthemes::theme_tufte(),
"ggthemes::theme_wsj()" = ggthemes::theme_wsj())