A note for the notebook check. Comparing a large 15.6inch laptop with a much beefier & noisier cooling (that is also configured to turbo to 35W all the time), against a 2-in-1 ultra-thin, ultra-silent, and ultra-portable 13 inch device (that is configured to only turbo to 25W for a few seconds and then operate at 15W) is kind of an invalid comparison. If you really want to compare like-for-like, so that you focus on the CPUs, you should compare otherwise identical models with identical chassis/cooling and power usage configuration.
The Lenovo Thinkpad E5xx series could be a good ground to compare the two brands. The ones ending in 0 (like E590) are the Intel variants and the ones ending in 5 being the AMD variants. There is still no Intel Icelake Thinkpad E series but there is the Whiskey lake one, the E590. Configured with an i5 8265U (4 cores, 8 threads 3.9. GHZ boost), IPS FHD screen, 8GB DDR4, 512GB NVMe M.2 SSD, Wifi 5, Bluetooth 5 it costs $799. The E595 with a Ryzen 7 3700U (4 cores, 8 threads, 4.0 GHz boost), IPS FHD screen, 8GB DDR4, 1TB mechanical hard drive, Wi-fi 5, Bluetooth 4.2 costs $755. So there is $44 difference but you are only getting a 1TB 5400rpm mechanical drive instead of a 512 NVMe M.2 which have a price difference of 60 dollars (30 dollars versus 90 dollars). And you will definitely want to throw away the mechanical drive to replace it with a SATA SSD anyway – a 500GB SATA SSD costs around 60 dollars so you will really be paying a total of 815 dollars and still get a worse product. Also no Bluetooth 5. Ah, and in terms of CPU performance, the i5 8265U slightly beats the 3700U too so there is no performance advantage for the 3700U either.
The most cancerous thing in the pc market right now is AMD fanboyism. Nearly every article or video involving a cpu comparison between Intel and AMD is littered by countless worthless and misleading comments about the supposed much superior value proposition of AMD products. The reality, however, is, that when you consider the price of a truly like-for-like full system, with the only difference being the cpu (Intel or AMD), the difference in price is like the Intel system is 5-10% more expensive while performing anywhere from 10% to 35% better and/or offering better/more features. This throws the AMD value proposition out of the window. This is more obvious in the laptop segment since by the very nature of the product, you are forced to buy a full system (cpu, motherboard, RAM, storage drive, chassis, screen, keyboard, etc) - if you compare otherwise identical models (same model series and features) you will find that Intel laptops offer either superior, or at the very least similar, value to AMD's.