Interesting. I have around eight. Work laptop decryption password, Work Email, Work VPN, SSH Key Cert Password,Personal Email, HN, Reddit, bank card and then a generic password for other trash which I don't really care if gets leaked. The passwords contain special characters too.
I can recall each one with no problem, no matter how long it's been. Only one password has a close match to any of the others.
I suppose if you don't have PayPal, Amazon, eBay, or any other online shop that would be ok -- but I wouldn't call any of those "trash", as they often remember my banking details, or at least have my purchase history + address, which I'd prefer not leaking.
I can recall each one with no problem, no matter how long it's been. Only one password has a close match to any of the others.