WASHINGTON — Big banks, lobbying firms, health care companies and major Silicon Valley players are all among the corporate sponsors of the left-leaning Center for American Progress, according to the first official tally of its corporate donors, released Friday by the group.

The disclosure comes only a week after Senator Elizabeth Warren, Democrat of Massachusetts, ignited a debate in Washington over whether such corporate donations to prominent research organizations result in academic-styled policy papers and newspaper opinion pieces that are designed to move corporate agendas.

Most of the major think tanks in Washington take corporate donations, in addition to contributions from foundations that sometimes have ties to corporations or to the executives associated with them. Neera Tanden, president of the Center for American Progress, said the donations have no impact on its work.

“This is an institution that tries to find the right answers,” she said in an interview on Thursday. “It does not answer to the agenda of any of its individual supporters or corporations.”