Help on how to donate please

Maybe a week or so ago, someone posted a thread, or maybe it was a reply, containing donation links to key races. Could have been ActBlue, but I don't remember. When I go to ActBlue, it just shows me a generic donation page. I want to give to Mark Kelly, AmyMcGrath, Jaime Harrison, Sara Gideon, and, of course, Joe Biden. If I've missed any, please tell me. That was just off the top of my head.

Is it suggested to give individually or just do the ActBlue thing and let them split it up?

Sorry if this is a stupid question. I can give about $25 each. It's not much, but it's something and I hope it can help.

Thanks in advance.

Update:
Thanks, everyone. I accidentally gave $50 to Joe Biden twice. It was confusing because they redirected me to his page. No biggie. I just hope these people win our country back for us!