CompletableFuture versions of V2Api.Lists.
A team's squad (summary fields).
A league's season posters and badges: every piece of season artwork, with who uploaded it (several per season are possible). Listed in the official OpenAPI description; not on the HTML documentation page.
A league's seasons with badges, posters and descriptions.
A league's teams with badges and colours. No alternate names: look teams up by id for those.