What made it a violation of the espionage act? She was the Secretary of State and, as such, was allowed to have classified information (to include Top Secret) in her home. It only would have violated the espionage act if she had kept it after she left office -- which, as you point out, she did not.
Not according to what was reported, not to mention the fact that information is typically not "stored" (long term storage) on phones, but rather accessed from databases and servers. Additionally, if you look it up, when a phone would "break" (quit working well) she would replace it and, as regulations tend to require for phones that can access Classified information, she destroyed the old phone once the new one was working. To the best of my knowledge, from the evidence that has been shown, none of the phone were destroyed when there was a subpoena, meaning there could be no obstruction.
No, it was not her home computer -- not to mention the fact you are conflating two issues. First, 30,000 emails were deleted off of her email server after Congress (not law enforcement) had subpoenaed her emails. Per Congressional testimony, the administrator that ran her email server had been ordered, months before, to delete those emails (as they were personal in nature) -- months before the emails had been subpoenaed. The issue is, the administrator had not deleted them when requested and, around the time the subpoena was issued, he finally remembered to delete them -- this is per Congressional testimony. So any "obstruction of justice" for deleting the emails, per the testimony available, would only convict the system admin. If you have evidence that Hillary ordered it and obstructed justice, you should give it to Congress and the FBI; I'm sure they'd be interested in that evidence.
The "bleach bit" was done when Hillary left office, as regulations require; but a copy was made before they were destroyed that was given to the State Department, as an archive copy (again, as required). If she had not "bleached" her computer, then you'd have an argument about her breaking the Espionage Act. Instead, she did what she was supposed to do under State Department regulations and ensuring she did not keep any information she was no longer authorized to have (again, what could get her charged with Espionage Act violations).
So, no, there were no "multiple crimes" to charge Hillary. You can argue that there was the one charge that could have been brought but, as was pointed out by FBI director Comey, it would have been difficult to get a conviction as the "intent" would have been impossible to prove.