RDM training and support has been identified as a major challenge in many organisations. Increasingly resources are invested in data steward teams to take up the task of training researchers. Naturally data stewards must also be trained to take up the job at hand. Many materials are produced to support professional development and train-the-trainer activities for researchers, data stewards and others involved in enabling FAIR and Open research. Many European funded projects have developed catalogues or intend to do so, sometimes with a particular discipline or profile in mind. They each have their peculiarities but encounter similar challenges and decisions to make. In the EOSC context a catalogue of catalogues has been proposed by the Training and Skills WG, to improve FAIRness of training materials. Building on two previous events organised by INFRAEOSC-5 projects, and ongoing collaboration with the Research Data Alliance (RDA) interest group on Education and Training in Handling Research Data (IGETHRD), this workshop will help consolidate further steps to improve sustainability of catalogues, and their technical and semantic interoperability. In this workshop we aim to describe and compare several catalogues developed. We will investigate solutions to interact and we will formulate advice on how to proceed in the future to sustainably catalogue the training resources needed for researchers and data stewards to make digital research objects that are FAIR and open'.