  We report investigations of the magnetic textures in periodic [Pt(1
nm)/(CoFeB(0.8 nm)/Ru(1.4 nm)]$_{10}$ multilayers using polarised neutron
reflectometry (PNR) and small-angle neutron scattering (SANS). The multilayers
are known to host skyrmions stabilized by Dzyaloshinskii-Moriya interactions
induced by broken inversion symmetry and spin-orbit coupling at the asymmetric
interfaces. From depth-dependent PNR measurements, we observe well-defined
structural features, and obtain the layer-resolved magnetization profiles. The
in-plane magnetization of the CoFeB layers calculated from fitting of the PNR
profiles is found to be in excellent agreement with magnetometry data. Using
SANS as a bulk probe of the entire multilayer, we observe long-period magnetic
stripe domains and skyrmion ensembles with full orientational disorder at room
temperature. No sign of skyrmions is found below 250\,K, which we suggest is
due to an increase of a effective magnetic anisotropy in the CoFeB layer on
cooling that suppresses skyrmion stability. Using polarised SANS at room
temperature, we prove the existence of pure N\'eel-type windings in both stripe
domain and skyrmion regimes. No Bloch-type winding admixture, i.e. an
indication for hybrid windings, is detected within the measurement sensitivity,
in good agreement with expectations according to our micromagnetic modelling of
the multilayers. Our findings using neutron techniques offer valuable
microscopic insights into the rich magnetic behavior of skyrmion-hosting
multilayers, which are essential for the advancement of future skyrmion-based
spintronic devices.
