Suspicious numbers and login items

I'm just gonna get straight to the point here. I was on my macBook. I Googled something, and then I decided to press "Command + V" just to double-check that what was pasted was what I copied. Instead of showing what I expected it to show, it showed a random string of numbers. I decided to search up that string of numbers, and nothing came up. It terrified me. I immediately ran another Malwarebytes scan, nothing was detected. I didn't download any Mac apps that day. Before responding, please note that I'm on macOS Sonoma, have no unknown apps installed on my laptop, no Chrome or any browser extensions whatsoever, no Chrome apps, and I have nothing executable in my downloads folder. None of my accounts seem compromised, and I can still successfully log in. But today, as I'm writing this, I opened my laptop and coincidentally it said "New Login Items Notification" which immediately kind of freaked me out. It said the item was named "Google LLC". I Googled this, and it said that the process is legit. But now I'm kind of worried that it is an imposter login item posing as the real item. How did all this randomly happen so suddenly in the span of a few seconds? Thank you for any responses.

Not something that is malware. It was added because you have Chrome installed.

Not something that is malware. It was added because you have Chrome installed.

Thank you, but how would the clipboard issue be explained? This appears abnormal.