is there a W3C API standard response/Params format ?

[rv2931]

Hello
I'm looking for standards applied to API RestFull that is a W3C standard
I've seen JSON:API, HAL+JSON, PostgRest, ODATA, Jsend
Each of them propose some syntaxes, some way to manage pagination, some variable name for it, soles of them propose some link to ease discovering, some of them no, some of them include schema definition and even catalog for ODATA, some of them not at all as Jsend. add the same considerations for filtering data via query parameters (Elastic serach, Opendatasoft have their own standards...)
I know that PostgRest is conform or try to be confirm to HTTP standard using http headers for pagination but in the content, it is really simple. To much maybe and finally the content doesn't respond to a specific standard, only pagination...
It is quite a mess and I don't manage to know if one of them are really standard in W3C terms
Maybe my question is wrong and maybe smthe standard is just to have no standard and the standard is to give openapi description and so your conform with your standard and conform as you supply an openapi schema... ?
I don't know... I'm lost :D
Thank in advance for your time
RV