Dell, if that's your preferred brand. Intel i5 (quad core), core count more for overall system performance than PowerBI.
Then just focus on the processor, since that usually dictates the other factors. Memory should be DDR4 (can't imagine a 7th or 8th gen not paired to DDR4)
One thing to look at is the core clock and cooling. Sounds like a gaming machine analysis. You shouldn't be hitting the processor hard enough/long enough to worry about thermal throttling, but many laptops throttle the CPU for battery life.
Because they sell 4k on those, still say no to 4k. Its of little relevance at that size of screen, no matter how great video may look on it.
I picked up Lenovo Flex5 15" recently, as an all around with i5.