Welcome to the boards!
You said "sparked my obsession for Transforner again..." were you into TFs previously? What did you collect?
I have a similar story, the 2007 movie rekindled my passion for TFs from my childhood. Heaps of people are pretty critical of the Bay films (I'm one of them!

) but I do recognise that each new interpretation of the franchise brings new fans (and sometimes brings back old fans), and that's a good thing IMO.
I have those HA movieverse figures you mentioned, they are some of my favourites of the movie lines.
MPs are a very big rabbit hole to go down... but a brilliant one at that!