The reason for the variations of the character is the different calligraphic styles used by artists and their individual interpretations.
The website Chinese Names illustrates this point by showing four distinct Chinese calligraphic styles for the word love.
In the semi-cursive script style of calligraphic writing, the characters look the most similar to normal handwriting.
Geometric styles like Celtic knots work well and so do calligraphic ornaments.
Of his own work few, if any, examples have reached us; and those attributed with more or less probability to his hand are all representations of Buddhist divinities, showing a somewhat formal and conventional design, with a masterly calligraphic touch and perfect harmony of coloring.
The qualities of the new Chinese schools were essentially those of the older dynasties: breadth, simplicity, a daringly calligraphic play of brush that strongly recalled the accomplishments of the famous scribes, anti a coloring that varied between sparing washes of flat local tints and a strength and brilliancy of decorative effort that rivalled even that of the Buddhist pictures.
Moronobu was a consummate artist, with all the delicacy and calligraphic force of the best of the Tosa masters, whom he undoubtedly strove to emulate in style; and his pictures are not only the most beautiful but also the most trustworthy records of the Fife of his time.