It is indeed any spec-compliant USB-C cable, if with "fast charging" you mean "up to 60W". More on reddit.com

Honestly you cannot really trust any of them. If they say 60W, they might work for 20v 3a charging, but might only do 480Mbps data transfer. They might say 240W, and also do 10Gbps data transfer, and have an eMarker chip so they can do 240W. They might only do charging and have no eMarker chip so 20v at 3a is the best you'll ever get, and no data transfer at all. So, when you ask about trust, you should tell us a bit more: Do you care about charging speeds above 60W (20v @ 3a)? Do you care about data transfer at all? USB4? USB3.2? USB2.0? The challenge with USB-C is that there is NO REQUIREMENT for any USB-C cable to meet any standards, UNLESS you are a USB-IF member using one of their Logos. However, non-USB-IF members CAN and MAY and DO make excellent cables. I do not know what the penalty is against non-members using the USB-IF Logos, nor how they would enforce it, nor how USB-IF would enforce a member who makes a cable that is not compliant with the Logos shipped on the packaging or web listing. I picked up a Kolibar cable from Amazon (no affiliate links) and it has an e-Marker chip and does support 100w (20v @ 5a) charging, but does NOT support USB 3.2 Gen2, but the e-Marker chip claims it does. Another cable from UNILEEK (2 pack 6.6ft $11.99) did NOT have an e-Marker chip, so 60W max charging, and I didn't test data transfer. Shockingly a cable from LEIRUI (5ft $18.99) did everything it claimed -- eMarker chip, support for up to 240W of power, and USB3.1 Gen 2 data speeds. Finally a cable from Getrish ($6.99) that did have the e-Marker chip, but I didn't test data transfer. MOST PEOPLE WILL NOT NEED THE BEST USB-C CABLE!!! I need a charging cable for my mobile phone. I don't care about data transfer. Buy literally any USB-C cable. The most generic will do 60W, more than your phone can support. Spend as little as possible while making sure it gets enough generally decent reviews. Pay close attention to any reviews that show a USB Tester in their photos, because they usually know what they are doing. I need to charge my laptop, and sometimes move data to/from my computer. Depends on the laptop. If you need more than 60W, look for 100W or e-Marker USB-C cables. There are VERY FEW laptops that charge via USB-C and can even accept more than 100W. Most cables with an e-Marker chip will likely do USB 2.0 speeds of 480Mbps (60 megabytes per second). Still should be pretty inexpensive, USD$5-10 per cable depending on length. I need to power a small desktop computer at 240W AND data transfer of 10-40Gbps. Get a USB-IF certified cable, or read the reviews to see if people have verified that the cable does what it says. 240W means e-Marker Chip, 48V @ 5a, plus USB4 support (40Gbps) or USB 3.2 (10Gbps). These will be more expensive. Apple's amazingly-built version is USD$129. They will be between USD$15-$30 typically. More on reddit.com

Any USB-C cable will work. I've used laptop chargers and sketchy chargers, they all work

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Don't do it! Cable must be e-marked. Here is an excerpt from an android central article https://www.google.com/amp/s/www.androidcentral.com/editors-desk-charging-arm-and-leg-and-note-10%3famp Turns out that in addition to needing a PPS-capable wall adapter, you also need an e-marked USB-C cable. Again, without getting too technical, that's a cable that's certified to transfer wattage up to 100W and speeds up to 10Gbps as based on the latest USB 3.1 Gen 2 standard. The problem is that you can't tell whether a cable is e-marked just by looking at it. While there's a tiny chip on the inside of the cable near the plug, you probably don't want to have to take apart your cable to check. Macbook pro Apple cables are e-marked More on reddit.com