I'm not what you would call a Trumpster, but I can't see what he's done that calls for impeachment.
Phone calls to another world leader asking for help uncovering possible corruption, even if politically motivated, do not qualify as grounds for impeachment.
I think not getting the SC nod from Trump pushed the judge over the edge.
The Dems have been working on schemes to overturn the 2016 election starting with the November, 2016 efforts to persuade R electors to vote for someone other than Trump. The
Trump-Russia Collusion Delusion got underway before the election, the 25th Amendment shtick was already being discussed in Prog circles in December, 2016. There was the
Creepy Porn Liar who got greedy, "obstruction" that Mueller testified didn't happen, the "quid pro quo" that focused on corruption in the 2016 election rather than
Creepy Joe, the bizarre theory that because
Creepy Joe is a candidate for the Presidency that his son should not be investigated for pay-for-play influence peddling.
These are individual things - I probably missed some - but they are all parts of the same whole, the Dem effort to overturn the 2016 election.