I can only help with a few. I’m sure some one here has a whole lot more information than I do.
Low center triangle with arrow is: USSR (Izhevsk Arsenal; post 1929 parts making)
The square with the line through the middle is: USSR (post World War II, arsenal-refinished metal parts)
Center top faded stamp: USSR (Izhevsk Arsenal, 1929
The information was obtained by the book written by Terence W Lapin, The Mosin-Nagant Rifle 3rd Edition.