Yes, it's definitely worth taking a look at Michael G's website.
Your 1853 top picture is his Style A (Italic 5), and the bottom picture is his Style C (I think this is the most common type of 5 in 1853). Like the 1858's there are many minor variations of both these types in 1853...……………….and they both appear on PT and OT, although very difficult to find a decent grade Style A on a PT.
Seen less frequently is Gouby 1853 Style B, with yet another type of numeral 5, as per the picture below. Looks a bit like this 5 is on holiday doing the Rumba.
I actually booked a holiday today, but not until June 6th 2022. I thought I had better make an effort, because clearly the most important thing for the UK economy to survive (and perhaps the rest of Europe for that matter) is that all the Brits can go on holiday again.