I am looking for type 1 (as shown above) known as Benthic Foraminifera. (Binczewska et al, 2018).
Here is an image (under the microscope) of some of the forams I found from core section 4. (Author's own).
Binczewska, A., Moros, M., Polovodova Asteman, I., Sławińska, J. and Bąk, M., (2017). “Changes in the inflow of saline water into the Bornholm Basin (SW Baltic Sea) during the past 7100 years - evidence from benthic foraminifera record”. Boreas, Vol 47(1), pp.297-310.