The entire idea of Crossfit is constantly varied workouts. (The efficacy of this as a method of improvement is disputed, but I digress.) The workout of the day ("WOD") varies from day to day, as the name implies, and there are many, many, many organizations putting out WODs.
CrossFit HQ puts out the so-called mainsite WODs, which many recognize as "official" CrossFit. (Other Crossfitters dispute the centrality of these workouts, which calls into question the very definition of Crossfit, which is not settled.)
Many individual Crossfit gyms ("boxes") publish their daily workouts. Here's a Crossfit website local to me. Notice they have distinct strength, skill and conditioning portions in most of their workouts. This is common but by no means universal.
Benchmark WODs and standard warm-ups
Crossfit HQ and individual boxes might have standard-issue warm-ups or workout formats, but there is no universal baseline Crossfit workout. Further, there are named workouts like Diane, Isabel, Murph and many more that are considered "benchmark" workouts. These are not quite the same as a baseline workout, since they are meant to measure progress (vis-a-vis Crossfit ability) over the long term. The benchmark WODs are not meant to be used daily or as a workout format generally, particularly since many of them are "chippers" or otherwise considered more brutal than most WODs.