A family of Microsoft word processing software products for creating web, email, and print documents.
For each special TOC topic that you need, choose a single letter as an identifier. For your examples, you might choose "s" for sports, "o" for outside, and "g" for gym. That letter needs to be placed in an \f switch in the field code for that topic's TOC. (For more about field codes and switches, see http://wordfaqs.ssbarnhill.com/TOCSwitches.htm#BehindCurtain and https://support.office.com/en-us/article/field-codes-toc-table-of-contents-field.)
To limit the items in these TOCs to just the ones in TC fields, remove the \o switch that's the default for including headings. If you use the Custom Table of Contents dialog to create the tables, you can do this by clicking the Options button, checking the "Table entry fields" box, and clearing the "Styles" and "Outline levels" boxes.
Then you need to create TC fields for each checklist -- one field for each topic into which that checklist fits. So the basketball checklist would need three TC fields, each with one of the identifier letters, again in an \f switch (see https://support.office.com/en-us/article/field-codes-tc-table-of-contents-entry-field.)