As of now, zero out of two impeachments of a President have resulted in conviction and removal (Nixon quit before he could be impeached). Even though we like to say it’s a political process and you don’t really need the kind of evidence that will hold up in a “real” court, the scant record so far with Presidents is the House may reach for whatever they can hang it on, but Senators are loath to sack a President unless you got yourself something really worth the potential fallout.
But at the same time, the fact that it IS political means I don’t expect the congressional GOP will lend the votes unless you have a rock solid slam dunk of a case, perhaps involving dead girls AND live boys, shootings in broad daylight on 5th Avenue and inviting Putin to reannex the Aleutians, with multiple eyewitnesses and a sworn confession.