% arara: lualatex

documentclass{article}
usepackage{relsize}
usepackage{unicode-math}
usepackage{booktabs}
newcommand*{enlarge}[1]{mathlarger{mathlarger #1}}

begin{document}
    begin{tabular}{llll}toprule
        Font & Normal & Bold & Big\midrule
        Latin Modern Math & $Re(i)mscrR(i) mscrF$&$mbffrakR(i)mbfscrR(i)mbfscrF$&$enlarge{Re}(i)enlarge{mscrR}(i) enlarge{mscrF}$\
        XITS Math & setmathfont{XITS Math}$Re(i)mscrR(i) mscrF$&$mbffrakR(i)mbfscrR(i)mbfscrF$&$enlarge{Re}(i)enlarge{mscrR}(i) enlarge{mscrF}$\
        Asana Math & setmathfont{Asana Math}$Re(i)mscrR(i) mscrF$&$mbffrakR(i)mbfscrR(i)mbfscrF$&$enlarge{Re}(i)enlarge{mscrR}(i) enlarge{mscrF}$\
        TeX G. P. Math & setmathfont{TeX Gyre Pagella Math}$Re(i)mscrR(i) mscrF$&$mbffrakR(i)mbfscrR(i)mbfscrF$&$enlarge{Re}(i)enlarge{mscrR}(i) enlarge{mscrF}$\bottomrule
    end{tabular}
end{document}