I am working on a commentary on the Psalms. I have decided to compile some helpful links that I discovered during my research. It includes a mix of exegetical and sermonic links. Here is what I have for Psalm 100 (in no particular order). Feel free to mention any that you find helpful in the comments section.
Analysis by C. J. Labuschagne: https://www.labuschagne.nl/ps100.pdf
“Global Gladness” sermon by S. Lewis Johnson: http://sljinstitute.net/miscellaneous-topics/global-gladness
William Barrick’s notes: https://drbarrick.org/files/studynotes/Psalms/Ps_100.pdf
John Piper, Education for Exaltation: https://www.desiringgod.org/messages/education-for-exultation
Psalm 100 devotional: https://www.generations.org/devotionals/113
Daniel Akin sermon resources: https://www.danielakin.com/the-lord-is-god-and-he-is-good-through-the-psalms-series