My 2c.
During travel, I carry one laptop (ultrabook), 1 Kindle, 2 phones, RX100 camera, USB-C earphones. Below are some of the blocks that I have used over the years and have tried/supported many cable projects on a couple of crowd-funding platforms.

Overall I have settled on the following combo:
1. Cable-1: InCharge XL, 2m, 100W universal cable. Can do any-to-any connector type (USB-C, USB-A, MicroUSB, and Lightning) - Charges all devices; not suitable for high-speed data transfer
2. Cable-2: Monoprice Thunderbolt Cable, 1m, 240W, 40Gbps - Used as backup for USB-C to USB-C charging, and for high-speed display and data transfer.
3. Primary Charger - Anker Prime 3 port 67W GaN
4. Backup Charger - Chargeasap Omega, 4 port (goes in the checked bag)


Top: Hyperjuice 100W, SlimQ 65W, Omega 100W ; Bottom: Anker Prime 67W, Anker nano 65W


Have other versions of cables and chargers as well. Would be happy to provide specifics.
Cheers!