I think it depends on your definition of "better". In some cases it may be better to be anonymous, in others the opposite. Like: if you want to donate to a GoFundMe for someone you know - anonymous.

I think it depends on the situation and the donee. The nuns did a job on me with their lesson that a good deed doesn't count as a good deed if you tell someone about it. That doing so nullifies the charitable thought behind it. I think some of that stuck with me. But promoting an organization can be as advantageous to them as a donation. So my rule of thumb is not speaking about personal-level donations (to people or families or groups) but I'll promote my support for an organization I think deserves help.

Both work quite well, I think that it is a case of trying to be sensitive, and using the best ploy in each individual situation.

Comically in the UK we have an annual poppy day for the benefit of former service personel, and I often refuse the little paper poppy you are offered to show that you donated, in part to save them money and also because I feel it is immodest to show off your charity. But of course that means I have to donate again to the next seller and the next.....

It’s when people make a great show of their charitable giving that the motive comes into question I suggest. As when I giant corporate cheque walks in the door from a corporation on a charity telethon.

Widow’s mite comes to mind.

It's up to yourself.
But if it is done for advertising and tax purposes as is the case with some corporations it does open the motivation up to question.