It is possible to make a wordlist of specified tags only. The process would be as follows:
This way, Sketch Engine will find all words tagged as the regular expression you created, but the result list will be displayed as another attribute. Please, be aware that using the option 'display as' takes way longer than simple list and some statistics (document frequency, ARF, ...) aren't available in the results. Therefore, it should be used only when it is necessary.
I am including a screenshot of the settings, that will search for any adjective (using the TreeTagger tagset https://www.sketchengine.eu/english-treetagger-pipeline-2/) and display the results as lemmas.