I wouldn’t call them “Accelerators”, but yes there are a whole bunch of Cloud and On-premises adapters, connectors and modules.
You can also create your custom adapters using the Adapter Development Kit.
These SWIFT and other modules are B2B items, so you’ll find them with webMethods Trading Networks along with other eStandards such as EDI, EDIINT.
Look at the documentation site and you will get your answers (link).
yes there are, we have b2b add ons for all the standards that you mention. We also provide depending on the product different connectors for various different applications, services and products.
For instance our list of connectors is here online
This has long been a gap in webMethods, the concept of Templates/Archetypes whereby standardised logic can be baked in for various scenarios reducing the effort required by developers, e.g. specifc logging and audit requirements, best practices etc. thereby reducing the entry level further so they can focus on configuration and mapping.