I have been using NextGrid 5 for several years (I bought a lifetime license) and I use it in a dozen of my programs.
This is a great component, much easier and "fun" than Virtual StringTree. NextGrid is very configurable, can handle thousands of rows without problems, has a very useful column editor, dragging columns and rows works without writing even one line of code, each column (and column header) have its own color and font, background and text color of each cell can be set in event handlers, it has a footer, and more...
NextGrid is really unique. I also have a VCL component package from TMS with AdvStringGrid, but I definitely prefer NextGrid.
Please share your component to the Lazarus / FPC community, even if it would be Windows only!
In the attachment there is a screenshot with the NextGrid 5