Recommend you change the title of this post to replace "political art" to explicitly state "anticapitalist/socialist art". You're sure to get more enthusiasm that way, fellow comrade ๐ค๐
And idk if they're open for comms at the moment, but the first artist that comes to mind is HearthFox (has recently done "don't kinkshame" art in goofy rubberhose/Looney Tunes style)
Other artists that come to mind that do Lefty and/or punk-rock themes: DeoTasDevil, Strype, Denucard -- they don't have "toony" styles, but they probably know someone who does