Ryzen 5500 vs 5600

First of all, I'm from Argentina.

My actual PC:

Processor > Ryzen 3 3100

Motherboard > Asrock B450M-HDV 4.0 (PCIE 3.0)

Cooler > Stealth Spectrum

RAM > Patriot Signature Line Premium 2x8 3200Hz CL22

GPU > GTX 1050

Storage > Adata 512GB SSD and Kingston 240GB SSD

Power Supply > Gigabyte 550W 80+ Silver

Case > Cougar MX110

Monitor > Flatron E1942

I wanted to upgrade it with these components:

GPU > RX 6600 or 6600XT

Monitor > Asrock CL25FF FHD 100Hz

CPU > Ryzen 5 5500 or 5600

Cooler > ID-Cooling SE-903 XT FRGB

Storage > NVMe 1TB 3.0 (because of my Mother)

I know the The 5600 is a favorite for many and the first choice for an AM4 CPU.

The thing is, I've been searching for it for several months on different websites and even Facebook (In my country its a good option for buying used) and it's either completely unavailable or very scarce (so much so that the posts disappear within hours).

That's why I'm considering the 5500, which is not only a bit cheaper but also much more readily available.

I've seen that their performance is quite similar, but why do people always end up choosing the 5500?

I know the 5600 has 32MB of VRAM and Vermeer architecture but in benchmarks, the difference is barely noticeable.