"Mascot," like "Paradise," "Bumble Bee," etc., is a trade name and not a recognized color or pattern.
The first Betta you show is a Butterfly; note it's equally-divided, distinct bands. Dreaaaa93's Betta does not have these bands.
Butterfly according to the International Betta Congress*:
"The Butterfly is a variegated Betta with a very specific fin pattern. The key is in the fins that display a banded pattern. Emphasis is placed on the contrast and crispness of the band not the coloring of the body and fins. The band should be crisp not just a lightening of opposing fin color. For example, a yellow Betta with yellow fins that have a lighter yellow outer band is not a butterfly but a fish with distinct yellow and clear bands on the fins is a butterfly. Bands should scribe an even oval around the fish. There are two forms the banding may take: A fin pattern with two bands, where the fins are divided in half by two opposing colors, and a multiple, three or more, band pattern, where the fins are divided equally between the number of bands. The multiple band pattern is sometimes difficult to identify since two of the bands, though distinct, may be subtle but different shades of the same color. In this case, shining a flashlight from behind the fins may aid in detecting this trait but the lack of definition between bands is considered a fault. The body color of the Butterfly Betta and the color in the first fin band may be either a single color, bicolored, marbled, or multicolor. "
Marble, according to the IBC:
"The Marble Betta, like the Butterfly, is a Patterned Betta. However, it is variegated in a different manner. The key differences are the lack of fin banding and the presence of other colors on the body in a “marbled” effect. Two types of Marbles exist, the “Traditional Marble”and the newer “Colored Marble” which may have many colors other than the black/flesh/white combination. Though cellophane is sometimes considered to be a genetic marble variant, it is not classed as a marble phenotypically. The fins and body must show at least two colors. These must include a light and dark color mix. Fish exhibiting sharp “edges” to the marbling pattern are preferred over those with blended colors."
Multi-colors, according to the IBC:
"This designation is for Bettas with two, preferably three or more colors that do not fit into any of the other patterned categories. Ideally, the colors are in high contrast to each other. The colors are those normally seen in Bettas. However, simply having the head alone a different color or only having a different color (Black head in traditional iridescent colors) or only having a different color on the tip of the ventrals is not sufficient to be designated as Multicolor. Judges need be particularly cautious of Bettas shown as Multicolor that show as a second color only a fine wash, such as a “Blue with a bad Red wash”, which is not sufficient."
*Note: The IBC (https://www.ibcbettas.org/) sets the conformation, color and pattern standards for Betta and conducts local, national and International shows. For anyone interested, the judging and show standards' manual can be downloaded.