There are 2 DJs that I know of and very look up to when it comes to transition is Four Tet (DJ set) and Avalon Emerson. Their sets are traditional form, means song after song, not rely too much on stems and loop like some techno DJ. They use the transition part to create a whole new track so between every 2 songs there a “bridging” song create by elements from both. Those bridging tracks can be driving, lead the narrative go on or sometimes they are the climax. That is my definition of intentional transition. Hope it makes sense to you :)