It has been proposed that the protoplanetary disks of intermediate-mass young stellar objects (1.5-3.5 solar masses) host a large fraction of forming planets, when compared to T Tauri disks. This, together with their youth and large disk-sizes, make them ideal candidates to study ongoing planet formation. However, the study of intermediate-mass forming stars has been historically hampered by the lack of a well-defined, homogeneous sample, and because few sources were known. Applying machine learning techniques to Gaia data, we have constructed a large and homogeneous catalogue of 2226 new intermediate- to high-mass forming stars, increasing by an order of magnitude the number of known objects of the class. This unique list of new intermediate-mass forming stars is an excellent dataset to conduct research on several open problems in star and planet formation. In the near future, this catalogue of new intermediate-mass forming stars will be observed by the WEAVE multi-object survey spectrograph. This will greatly enhance and complement the Gaia data products. To exemplify the upcoming WEAVE science, I present the results of a spectroscopic survey that targeted 145 stars from this catalogue. These observations allowed us to derive accretion rates and to study which accretion mechanism is predominant in different stellar mass ranges. I provide further evidence to the transition from magnetospheric accretion to boundary layer accretion happening at around 4 solar masses.
One long-standing question in star formation is how the clustering properties of forming stars depend on the stellar mass. To further exemplify the importance of these new sources, I also present a Gaia-based analysis on the clustering properties of low, intermediate, and high-mass forming stars, using the largest sample ever considered. I conclude this presentation with a description of the planned research on a newly identified population of disks around these new intermediate-mass young stellar objects.