I recently reorganized by subject rather than by dive trip, except for a few recent big trips. Based on the pics that people usually want to see -- sharks, sea lions, turtles., etc.
https://photo.jefflaity.com
Smugmug has some interesting gallery website examples on their homepage. I liked this example:
https://www.christianpondella.com/
You can publish directly to a Smugmug site from Lightroom with their plug-in.